Friday, 6 November 2026

Hong Kong Luxury Retail Booms While High Borrowing Costs Hit Australian Businesses

 Hong Kong jewellery sales lead the retail recoverySales of jewellery, watches and valuable gifts in Hong Kong increased by 20.3% year on year in September 2026, reaching HK$4.706 billion (approximately US$603 million), according to provisional figures released by the Hong Kong Census and Statistics Department on November 3.

Hong Kong’s jewellery and watch industry is experiencing a remarkable recovery, with sales jumping more than 20% in September 2026. The figures provide an interesting contrast to the retail environments in Australia and the United States, where higher borrowing costs, household debt and the rising cost of doing business are putting pressure on retailers, forcing some well-known businesses to close stores or restructure.

The contrasting results raise an important question: why are some economies and retail sectors performing considerably better than others?

Hong Kong jewellery sales lead the retail recovery

Sales of jewellery, watches and valuable gifts in Hong Kong increased by 20.3% year on year in September 2026, reaching HK$4.706 billion (approximately US$603 million), according to provisional figures released by the Hong Kong Census and Statistics Department on November 3.

Sales volume also increased by 7%, indicating that the growth reflects increased purchasing activity rather than simply higher prices.

The jewellery and watch category was the strongest-performing major retail sector during the month, comfortably outperforming Hong Kong’s overall retail market, where sales value increased by 6.4%.

The positive trend has been building throughout the year. For the first nine months of 2026, jewellery, watch and valuable gift sales rose 22.4% to HK$45.82 billion (approximately US$5.87 billion), while sales volume increased by 6.8%.

Interest rates: A significant difference between the three markets

One potential explanation for the different retail environments is the cost of borrowing and the impact of monetary policy on households and businesses.

As of November 6, 2026, the respective central bank policy rates are:

  • United States: Federal Reserve target range of 3.75% to 4.00%.
  • Australia: Reserve Bank of Australia cash rate of 4.85%, following a 0.25 percentage point increase on November 3.
  • Hong Kong: Hong Kong Monetary Authority base rate of 4.25%, following the US Federal Reserve’s October decision to leave rates unchanged.

These figures are not directly equivalent to the mortgage, business lending or consumer borrowing rates paid in each market, but they provide an indication of the different monetary conditions.

Australia currently has the highest policy rate of the three. Higher interest rates can place considerable pressure on Australian households, particularly those carrying large mortgages, while also increasing financing costs for businesses.

When households devote more of their income to mortgage repayments, utilities, food and other essential expenses, discretionary purchases are often among the first areas where spending is reduced. Jewellery, watches and luxury goods can be particularly affected.

For retailers, higher borrowing costs can also make it more expensive to finance stock, maintain premises, employ staff and manage day-to-day operations.

In the United States, although the Federal Reserve’s policy rate is lower than Australia’s, American consumers continue to face significant household debt, financing costs and pressure from the cost of living.

Hong Kong’s situation is different. Its currency is linked to the US dollar through a currency peg, meaning its monetary conditions are closely influenced by Federal Reserve policy. Its base rate therefore broadly follows US interest rate movements, although local banking and interbank market conditions also influence actual borrowing costs.

Australia and the United States: Retailers under pressure

Across Australia, retailers are navigating a difficult combination of high household expenses, mortgage repayments, wages, commercial rents and operating costs.

The result is increasing pressure on discretionary retail spending. When consumers become more cautious, businesses selling non-essential products can experience a significant reduction in demand.

The United States is facing its own retail challenges, with a number of established retail chains announcing store closures, restructuring programmes and changes to their business models.

It is important to recognise that store closures do not necessarily mean an entire economy is contracting. Retailers also close locations because of changing shopping habits, online competition, lease costs and corporate restructuring. However, the broader trend highlights the difficulties facing traditional retail businesses.

Why is Hong Kong performing differently?

Hong Kong’s strong jewellery sales suggest that consumer demand can remain resilient even when global economic conditions are uncertain.

Its position as an international financial and luxury shopping centre, established tourism market and major destination for jewellery and watch trading provides advantages that are not necessarily shared by Australia or the United States.

Tourism and visitor spending can also contribute significantly to luxury retail performance. The earlier arrival of the Mid-Autumn Festival helped support visitor numbers and spending in September.

The Hong Kong government has also reported a broader retail recovery, with total retail sales increasing for the 17th consecutive month.

What does this mean for the jewellery and diamond industry?

The jewellery industry is particularly sensitive to consumer confidence, disposable income and access to credit. However, the market is not uniform.

Hong Kong’s latest figures demonstrate that demand for luxury jewellery and watches can grow strongly even while other developed economies experience retail difficulties.

For Australian jewellers, diamond dealers and retailers, the challenge is to understand the changing economic environment and adapt accordingly.

For consumers, it is also worth remembering that jewellery and watches represent different types of purchases. A luxury watch or branded jewellery piece may carry a substantial retail premium, while the underlying value of precious metals and diamonds depends on their individual characteristics and prevailing market conditions.

The bigger economic picture

The comparison between Hong Kong, Australia and the United States demonstrates that global economic conditions do not affect every country equally.

Interest rates, government policy, taxation, consumer confidence, debt levels, tourism and business operating costs all contribute to economic performance.

Hong Kong’s 20.3% increase in jewellery and watch sales is an encouraging sign for the international luxury market. Meanwhile, the challenges facing Australian and American retailers demonstrate how quickly consumer spending can be affected when the cost of living and doing business increases.

Ultimately, a healthy retail economy depends on more than just headline growth figures. It requires consumers with disposable income, businesses that can operate profitably and an economic environment that encourages spending, investment and long-term confidence.

Source: DCLA

Thursday, 5 November 2026

Gem Diamonds Raises 2026 Forecast Following Exceptional Large-Diamond Sales

 

Exceptional high-value diamonds from Lesotho’s Letšeng mine have boosted Gem Diamonds’ financial performance, prompting the miner to increase its production and sales forecasts for 2026.

Gem Diamonds (LSE: GEMD) has upgraded its full-year 2026 production and sales guidance following a strong third quarter, with several exceptional large diamonds contributing significantly to revenue.

The Africa-focused diamond producer now expects to recover between 78,000 and 80,000 carats during 2026, up from its previous forecast of 75,000 to 78,000 carats. Sales guidance has also increased to between 79,000 and 81,000 carats.

The improved outlook highlights the continuing importance of exceptional, high-value rough diamonds in an industry where the quality and rarity of individual stones can have a far greater financial impact than overall production volumes.

Exceptional diamonds drive revenue growth

Gem Diamonds reported third-quarter revenue of US$34.8 million, representing a 35% increase compared with US$25.7 million in the same period last year.

Interestingly, this growth occurred despite a 22% decline in carats sold, which fell from 22,830 to 17,899 carats.

The average realised selling price increased by an impressive 73%, reaching US$1,945 per carat, compared with US$1,124 a year earlier.

Four exceptional diamonds each sold for more than US$1 million, generating combined proceeds of US$22.2 million, accounting for almost 64% of the company’s quarterly revenue.

Among these stones was the remarkable 347-carat Lesotho Jubilee, a white Type II diamond recovered in June and sold during the third quarter.

<em>The 347-carat Lesotho Jubilee, recovered at the Letšeng mine in Lesotho.</em>

The results demonstrate the extraordinary influence that rare, large diamonds can have on a mining company’s financial performance. While overall production and sales volumes remain important, the discovery of even a single exceptional stone can substantially influence quarterly revenue and profitability.

The 347-carat Lesotho Jubilee


Letšeng mine production

Recoveries at Gem Diamonds’ Letšeng mine in Lesotho totalled 19,299 carats during the third quarter, down 13% from 22,268 carats in the corresponding period last year.

Three diamonds weighing more than 100 carats were recovered during the quarter, bringing the year-to-date total of stones exceeding this size to six.

Mining and processing operations remained concentrated on the Main Pipe, while preparations continued for the next phase of development at the Satellite Pipe.

CEO Clifford Elphick said September’s rough diamond sales achieved good prices, with the results further supported by the sale of the 347-carat Lesotho Jubilee. He described the results as encouraging indicators that demand and prices for Letšeng-quality diamonds remain firm.

Financing and changes to Lesotho’s diamond royalties

Gem Diamonds is also finalising commercial terms with Nedbank and Standard Bank to renew its revolving credit facilities before their scheduled expiry on 21 December 2026.

The company has welcomed the Lesotho Government’s proposed introduction of a variable diamond royalty rate ranging between 3% and 6%, describing the change as a positive step towards the long-term sustainability of mining operations.

Despite the improved production and revenue outlook, Gem Diamonds shares declined 14.2% to 12.44 pence during mid-afternoon trading in London, valuing the company at approximately £17.4 million.

The importance of exceptional diamonds

Gem Diamonds’ latest results provide a clear reminder that the diamond industry’s value is not measured by carat weight alone.

Large, rare and exceptional-quality diamonds occupy a distinct segment of the market, where colour, clarity, crystal structure, size and rarity can have a substantial influence on value.

For diamond owners and buyers alike, understanding these characteristics requires specialist knowledge and professional assessment.

At the Diamond Certification Laboratory of Australia (DCLA), diamond identification, grading and certification provide an independent assessment of a diamond’s characteristics, helping owners better understand the qualities that contribute to its value.

Wednesday, 4 November 2026

A Complete Guide to Antique Diamond Cuts: History, Styles and the Beauty of Old-Cut Diamonds

 The Cushion Cut evolved from earlier antique diamond shapes, including the Old Mine Cut.Its rounded corners and square or rectangular outline give it the appearance of a cushion.Depending on the period and cutting style, cushion diamonds can have broad facets, smaller brilliant-style facets or a combination of both.

For centuries, diamonds have captivated people not only because of their rarity and beauty, but also because of the extraordinary skill required to transform a rough crystal into a polished gemstone. Long before modern diamond-cutting technology, master craftsmen developed ingenious techniques to reveal the beauty hidden within each stone.

Today, as jewellery trends increasingly embrace individuality, heritage and craftsmanship, antique and old-cut diamonds are enjoying renewed appreciation. From the soft, romantic shimmer of a Rose Cut to the distinctive chunky facets of an Old Mine Cut, these historic cutting styles offer something quite different from the precise, high-brilliance diamonds commonly seen in contemporary jewellery.

An old-cut diamond is not simply an outdated version of a modern brilliant. It represents a different philosophy of craftsmanship, shaped by the technology, tools, lighting conditions and aesthetic preferences of its time.

Understanding these historic cuts provides a fascinating insight into the evolution of the diamond industry and helps explain why some of these stones are now highly sought after by collectors, antique jewellery enthusiasts and those looking for something genuinely individual.

The Early History of

Diamonds were treasured for thousands of years before the development of modern cutting techniques. Initially, they were valued largely for their natural shape, exceptional hardness and rarity. Early diamond traders and jewellers often used polished natural crystals rather than attempting elaborate cutting.

The earliest documented diamond-cutting techniques were relatively simple. Craftsmen gradually discovered that diamonds could be shaped and polished using diamond powder, eventually developing more sophisticated methods to create facets and improve their appearance.

As trade routes expanded and diamond centres developed across Europe, particularly in Venice, Bruges, Antwerp, Paris and Amsterdam, cutting techniques became increasingly refined.

The development of diamond-cutting technology was closely connected to the availability of mechanical tools, the understanding of diamond crystal structure and the growing demand for more brilliant gemstones.

The following historic cuts represent important stages in this evolution.

The Historic Diamond Cuts and Their Characteristics

1. The Point Cut – 14th to 15th Century

The Point Cut is among the earliest recognised diamond-cutting styles.

Rather than creating a series of facets, the cutter followed the natural octahedral shape of the rough diamond, polishing its existing crystal faces while retaining much of its original form.

The result was a pointed, largely unmodified diamond that preserved the natural geometry of the crystal.

These early stones were often used in medieval jewellery, particularly in rings and religious ornaments. Their appearance was considerably different from the brilliant diamonds we recognise today.

2. The Table Cut – 15th to 16th Century

The Table Cut represented an important advancement in diamond cutting.

By removing the top point of an octahedral crystal, cutters created a flat table facet. The corners could also be slightly truncated, introducing additional facets and improving the stone’s appearance.

Table Cuts became popular during the Renaissance and were frequently used in European royal and aristocratic jewellery.

Some examples featured a relatively large table and a small culet, the flat facet at the bottom of the diamond.

Their understated appearance reflects an era when symmetry, shape and the natural character of the diamond were often more important than maximum brilliance.

3. The Rose Cut – 16th Century Onwards

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The Rose Cut is one of the most recognisable and romantic antique diamond styles.

Unlike modern brilliant cuts, a traditional Rose Cut has a flat base and a domed crown covered in triangular or kite-shaped facets that rise towards a central point.

The number of facets varies. Traditional examples commonly have three, six, twelve or twenty-four facets, although more elaborate variations were also produced.

The Rose Cut does not have the deep pavilion of a modern brilliant diamond. Instead, its flat-backed construction creates a softer, more subtle appearance, with light moving across the surface rather than producing the intense flashes associated with modern brilliant cutting.

This construction can also make a Rose Cut appear larger across the finger than a modern diamond of comparable carat weight.

Rose Cuts became particularly popular during the Georgian and Victorian periods and were frequently incorporated into closed-back settings, often backed with silver or gold.

They were traditionally used in rings, earrings, brooches, pendants and elaborate floral jewellery designs.

There are several variations, including:

  • Dutch Rose Cut: Often featuring a higher, more rounded dome with a greater number of facets.
  • Antwerp Rose Cut: A traditional European variation with a flatter profile and triangular facets.
  • Briolette Rose Cut: An elongated, fully faceted drop-shaped form, particularly popular in pendant and earring designs.
  • Rose Brilliant: A more elaborate variation combining characteristics of rose and brilliant cutting.

The Rose Cut has experienced a significant revival in contemporary jewellery. Designers increasingly use it in modern bezel settings, asymmetrical designs and distinctive engagement rings.

Its appeal lies in its character rather than maximum sparkle. It offers softness, individuality and an unmistakable connection to jewellery history.

4. The Mazarin Cut – 17th Century

The Mazarin Cut is an early form of brilliant cutting, named after Cardinal Jules Mazarin, the French statesman and diamond collector.

It is generally associated with a cushion-shaped outline and an early arrangement of facets intended to improve the reflection of light.

The Mazarin Cut is an important milestone because it helped move diamond cutting away from simple geometric shapes towards the development of more sophisticated brilliant patterns.

5. The Peruzzi Cut – Late 17th Century

The Peruzzi Cut is traditionally attributed to Venetian cutter Vincenzo Peruzzi.

It developed the early brilliant-cut concept by introducing additional facets to the crown and pavilion.

The Peruzzi Cut is generally associated with a more developed cushion-shaped brilliant arrangement, often described as having 33 facets on the crown and 24 on the pavilion, excluding the culet.

Although these early brilliant cuts did not achieve the optical performance of modern diamonds, they represented a major advancement in the understanding of light reflection and diamond proportions.

6. The Old Mine Cut – 18th to 19th Century

The Old Mine Cut is one of the most desirable and recognisable antique diamond styles.

Popular during the Georgian and Victorian periods, it was generally cushion-shaped, with a relatively high crown, small table, rounded corners, deep pavilion and often a noticeably large culet.

Unlike modern brilliant diamonds, Old Mine Cuts were individually shaped by hand, with proportions that varied considerably from stone to stone.

Their facets were designed to perform under the candlelight and softer illumination of the period. The larger facets create distinctive flashes of light rather than the more uniform sparkle associated with modern cutting.

Many Old Mine Cuts have a slightly asymmetrical appearance, which is part of their charm.

These diamonds are particularly popular in antique engagement rings and heritage jewellery. Their individuality makes them attractive to collectors and buyers who appreciate traditional craftsmanship.

7. The Old European Cut – Late 19th to Early 20th Century

The Old European Cut represents another important development in diamond cutting and is the direct historical predecessor of the modern round brilliant.

It became particularly popular during the Victorian, Edwardian and early Art Deco periods.

Unlike the cushion-shaped Old Mine Cut, the Old European Cut has a more rounded outline. It generally features a small table, high crown, deep pavilion, relatively large culet and a symmetrical arrangement of facets.

Old European Cuts were designed to maximise the return of light using the cutting knowledge and technology available at the time.

As mechanical cutting methods improved, cutters were increasingly able to produce more consistent round shapes and symmetrical facet arrangements.

The Old European Cut remains highly sought after because of its distinctive appearance, historical significance and softer, more individual light performance.

8. The Cushion Cut – 19th Century and Earlier Origins

The Cushion Cut evolved from earlier antique diamond shapes, including the Old Mine Cut.

Its rounded corners and square or rectangular outline give it the appearance of a cushion.

Depending on the period and cutting style, cushion diamonds can have broad facets, smaller brilliant-style facets or a combination of both.

Modern cushion cuts continue to be popular, but antique cushion diamonds are particularly interesting because their proportions and facet arrangements often reveal the hand craftsmanship of their original cutters.

9. The Single Cut – 19th Century Onwards

The Single Cut is a relatively simple faceting style, generally consisting of 17 or 18 facets depending on the counting convention.

It has a small table, crown facets and a simple pavilion arrangement.

Single Cuts were widely used in smaller diamonds, particularly in pavé settings, watches and fine jewellery.

They were also commonly used in older jewellery where numerous small stones were required to complement a larger centre diamond.

Although less elaborate than a full brilliant cut, Single Cuts remain useful in contemporary jewellery manufacturing.

10. The French Cut – 17th Century Onwards

The French Cut is a distinctive square-shaped diamond cut with a geometric arrangement of triangular facets.

It is particularly associated with antique and Art Deco jewellery.

French Cuts were often used as side stones in rings and bracelets, where their straight edges and architectural appearance complemented the designs of the period.

Their popularity increased during the Art Deco movement, when geometric shapes, symmetry and strong architectural lines became central to jewellery design.

11. The Eight-Cut – 19th to 20th Century

The Eight-Cut is a simplified brilliant-style cut, generally featuring eight facets on the crown and eight on the pavilion, together with a table and culet.

It was particularly useful for small diamonds where a full brilliant arrangement was impractical or uneconomical.

Eight-Cuts were widely used in older jewellery, particularly in pavé and cluster settings.

They are still encountered in antique pieces and some modern jewellery manufacturing.

12. The Swiss Cut – 19th to 20th Century

The Swiss Cut is another simplified brilliant-style cut, generally incorporating a greater number of facets than an Eight-Cut.

It was commonly used for small diamonds and melee stones in jewellery settings.

These diamonds were designed to provide more sparkle than a basic single or eight-cut stone while remaining economical to manufacture.

13. The Transitional Cut – Early to Mid-20th Century

The Transitional Cut emerged as diamond-cutting technology advanced and the industry moved towards the modern round brilliant.

It combined features of the Old European Cut with improved symmetry, more refined proportions and a smaller culet.

These diamonds represent an important bridge between traditional hand-cut stones and modern precision cutting.

Many transitional diamonds have excellent visual character, combining the broad flashes of antique diamonds with increased brilliance.

14. The Modern Round Brilliant – 20th Century

The modern round brilliant cut represents the culmination of centuries of diamond-cutting development.

The work of Marcel Tolkowsky in 1919 helped establish a mathematical approach to diamond proportions and light performance.

Modern cutting technology, precision measuring equipment and advanced optical analysis have continued to refine the round brilliant.

The standard modern round brilliant typically has 57 facets, or 58 when a culet is present.

Its carefully calculated proportions, facet arrangement and symmetry are designed to maximise brilliance, fire and scintillation.

Although the modern brilliant is now the most familiar diamond shape, it is important to remember that it represents only one chapter in a much longer history of diamond craftsmanship.

Why Are Old-Cut Diamonds Becoming Popular Again?

There is a growing appreciation for jewellery that tells a story.

Modern consumers are increasingly interested in pieces that are individual, distinctive and connected to history. Antique diamonds offer exactly that.

Unlike many contemporary diamonds, which are cut to precise and consistent specifications, old cuts were often shaped individually by skilled craftsmen.

This means that two antique diamonds of similar size and cutting style may have noticeably different proportions, facet arrangements and optical characteristics.

There are several reasons for their renewed popularity.

Individuality: No two hand-cut antique diamonds are necessarily identical. Their subtle irregularities and distinctive proportions give them personality.

Historical significance: An antique diamond may have been cut more than a century ago, potentially passing through several generations of jewellery ownership.

Soft light performance: Rose Cuts, Old Mine Cuts and Old European Cuts produce a different visual effect from modern brilliant diamonds. Their broad facets and distinctive proportions create larger flashes and a softer appearance.

Larger face-up appearance: Some Rose Cuts and shallow antique diamonds can appear larger across the surface than a modern diamond of the same carat weight.

Sustainable jewellery: Reusing an existing antique diamond allows an old gemstone to be incorporated into a new design without requiring another diamond to be mined and manufactured.

Are Old-Cut Diamonds More Valuable Than Modern Diamonds?

The value of an antique diamond is not determined simply by its age.

A well-preserved Old Mine Cut or Old European Cut may attract considerable interest, particularly when it has attractive proportions, desirable colour and clarity, good condition and documented provenance.

However, not every old-cut diamond commands a premium.

Factors influencing value include:

  • Carat weight and face-up measurements.
  • Colour and clarity.
  • Overall proportions and symmetry.
  • Condition, including chips, abrasions and damaged facet junctions.
  • Originality and evidence of previous repolishing.
  • Rarity and desirability of the particular cutting style.
  • Historical provenance and supporting documentation.
  • Current demand among collectors and jewellery buyers.

It is also important to distinguish between an antique diamond and a modern diamond cut in an antique style. A newly manufactured Old Mine-style diamond may reproduce the appearance of an historic cut without having any genuine historical age.

Professional examination is essential when establishing what a diamond actually is.

The Importance of Professional Diamond Identification and Grading

One of the challenges with antique diamonds is that many were cut long before modern grading standards existed.

Old certificates, handwritten descriptions and jewellery valuations may not accurately describe the diamond according to today’s recognised grading terminology.

Furthermore, a diamond that has remained in its original setting for generations may have accumulated wear, damage or alterations that are difficult to identify without specialist examination.

At the Diamond Certification Laboratory of Australia (DCLA), diamond examination involves detailed assessment of the stone’s characteristics, including its weight, measurements, colour, clarity, proportions, polish, symmetry and identifying features.

The laboratory can also document the diamond’s cutting style and relevant characteristics, helping owners, collectors and the jewellery trade better understand the stone they possess.

A diamond grading report is not a monetary valuation. Rather, it provides an independent technical description that can assist with identification, insurance, resale and informed purchasing decisions.

Preserving the Past While Appreciating the Future

The history of diamond cutting is a history of human ingenuity.

From the simple Point Cut of medieval Europe to the elaborate Rose Cuts, Old Mine Cuts and Old European Cuts of later centuries, every development reflects the knowledge, craftsmanship and aesthetic preferences of its time.

The modern brilliant cut may offer extraordinary optical performance, but it does not make the earlier styles obsolete.

An antique diamond can possess something that cannot be reproduced simply by using modern cutting equipment: genuine age, historical character and a connection to the craftsmanship of another era.

Whether it is an inherited Victorian ring, an Edwardian engagement ring, an Art Deco jewel or a contemporary design incorporating a Rose Cut, these diamonds continue to demonstrate that beauty is not always about maximum sparkle.

Sometimes, it is about individuality, history and the story held within the stone.

At DCLA, we believe that understanding a diamond begins with understanding its characteristics, its craftsmanship and its history. Every diamond has a story, and the old cuts are among the most fascinating chapters in that story.

Tuesday, 3 November 2026

South African Diamond Miner Petra Diamonds Shares Suspended in London

 The company grew rapidly through the acquisition of established diamond mines, many of which had previously been owned by De Beers.

Petra Diamonds, one of the most recognised names in South Africa’s modern diamond mining industry, has had its shares suspended from trading on the London Stock Exchange following its failure to publish audited financial results by the regulatory deadline.

The suspension, which took effect at 7:30 am UK time on 2 November 2026, applies to Petra’s ordinary shares on the London Stock Exchange’s Official List and Main Market.

The development marks another difficult chapter for a company with a significant history in South Africa’s diamond industry, including ownership of the historic Cullinan mine, famous for producing some of the world’s largest and most valuable diamonds.

Importantly, the suspension is a regulatory measure relating to the delayed financial reporting. It does not mean Petra has been delisted, nor does it automatically stop its mining operations.
Petra Diamonds: From junior explorer to major international producer
Petra Diamonds was established in 1997 and initially listed on London’s Alternative Investment Market (AIM) with a market capitalisation of less than £10 million. Its original ambition was to become a significant independent producer of gem-quality diamonds.

The company grew rapidly through the acquisition of established diamond mines, many of which had previously been owned by De Beers.

A major turning point came in 2008 when Petra acquired an initial interest in the Cullinan Diamond Mine, near Pretoria, South Africa. It subsequently increased its ownership and invested heavily in modernising the operation.

In 2011, Petra acquired a majority interest in the Finsch mine, another historically important South African diamond operation. That same year, the company graduated from AIM to the Main Market of the London Stock Exchange.

Over the following years, Petra established itself as an important supplier of natural rough diamonds to the international jewellery industry. Its portfolio included several historic mining operations in South Africa and Tanzania.

Perhaps no asset in Petra’s portfolio carries greater historical significance than the Cullinan Diamond Mine.

Originally known as the Premier Mine, it was discovered in 1902. On 26 January 1905, the mine produced the extraordinary 3,106-carat Cullinan Diamond, the largest gem-quality rough diamond ever discovered.

The stone was subsequently presented to King Edward VII and cut into nine principal stones and numerous smaller diamonds. Two of the largest became the Great Star of Africa and the Second Star of Africa, now part of the British Crown Jewels.

The mine has continued to produce exceptional diamonds, including rare blue diamonds and high-quality Type IIa white diamonds. In 2021, Petra sold a remarkable 39.34-carat blue diamond recovered at Cullinan for approximately US$40.2 million, demonstrating the extraordinary value that can still emerge from South African diamond deposits.
Petra Diamonds+2

Why has Petra Diamonds run into difficulties?
Despite its impressive diamond heritage, Petra has faced mounting financial and operational challenges.

The company has been operating in an increasingly difficult diamond market, particularly as demand for smaller natural diamonds has weakened and competition from laboratory-grown diamonds has continued to affect parts of the jewellery market.

Its financial position has also been affected by operational difficulties at Finsch.

Petra entered a business-rescue process for the Finsch operation on 29 May 2026, with production suspended in June. This leaves Cullinan as the company’s only producing mine, according to the information in its latest operating update.

In July, Petra reported revenue of approximately US$206 million for the financial year ended 30 June 2026, broadly unchanged from the previous year.

However, its consolidated net debt increased to US$322 million, compared with US$298 million three months earlier. The company reported total cash of US$28 million, of which only US$9 million was unrestricted.

Petra also secured a short-term working-capital facility of approximately US$18 million and negotiated a deferral of around US$6 million in interest payments.

The company has subsequently undertaken workforce restructuring and launched a strategic review to investigate options for addressing its short-term cash requirements, potentially including asset disposals.
Audit delay triggers London Stock Exchange suspension
The immediate reason for the suspension is Petra’s failure to publish its audited annual report for the financial year ended 30 June 2026 by the 31 October deadline.

Petra had warned shareholders on 22 October that additional time was required to complete outstanding audit procedures, finalise consolidated financial statements and undertake the necessary group audit reviews.

On 2 November, the Financial Conduct Authority suspended the company’s listing, with trading on the London Stock Exchange’s Main Market also suspended.

Petra has stressed that the audit remains in progress and that it is working with its auditors to publish the accounts as soon as practicable.

The company has not announced a date for completion.

Importantly, the suspension is not a delisting and does not automatically affect the company’s mining operations. However, shareholders are unable to buy or sell their shares through normal London Stock Exchange trading while the suspension remains in place.

Petra has indicated that it will seek restoration of its listing once the audited accounts are published. This will require the necessary regulatory approval.
What does this mean for the diamond industry?
Petra Diamonds’ difficulties are significant because the company represents an important part of South Africa’s modern natural diamond mining industry.

For nearly three decades, Petra has built its business around some of the world’s most historically important diamond deposits. Its association with Cullinan, in particular, gives the company a unique position in the history of the natural diamond trade.

However, the current situation also highlights the pressures facing established diamond producers.

The industry is navigating changing consumer demand, competition from laboratory-grown diamonds, economic uncertainty and the substantial costs associated with operating deep underground mines.

For the natural diamond industry, the challenge is not simply finding diamonds. It is maintaining commercially viable mining operations, securing investment and ensuring that natural diamonds continue to command a premium based on their rarity, provenance and enduring appeal.

Petra’s future will depend on completing its audit, addressing its financial position and determining how best to secure the future of its remaining operations.

For the diamond industry, the story is far from over. The Cullinan mine has been producing remarkable diamonds for more than a century, and its geological resources remain significant. Whether Petra Diamonds can successfully navigate its current financial difficulties is now the question facing shareholders, employees and the wider diamond trade.

Source note: Historical background is drawn from Petra Diamonds’ published company history and Cullinan heritage information. The 2026 financial and suspension details above are based on the information supplied for this article.

Source: DCLA

Hong Kong Luxury Retail Booms While High Borrowing Costs Hit Australian Businesses

  Hong Kong’s jewellery and watch industry is experiencing a remarkable recovery, with sales jumping more than 20% in September 2026. The fi...