Wednesday, 7 October 2026

6.03 Carat Yellow Diamond Found in Arkansas

 One of the World's Most Famous Diamond Fields

A remarkable 6.03-carat yellow diamond discovered by an amateur diamond hunter at Arkansas’ famous Crater of Diamonds State Park has attracted international attention, with its finder claiming that collectors have suggested the stone could be worth as much as US$1 million.

The diamond was discovered by Jack Pearadin, a US Navy reservist who has been searching the park since 2013. Pearadin has reportedly recovered more than 300 diamonds during his years of searching and eventually moved to nearby Murfreesboro to live closer to the diamond field.

The latest discovery was made while Pearadin was processing a bucket of gravel during a TikTok livestream in January. He spotted the unusual yellow crystal among the gravel and quickly realised he had found something considerably larger and more distinctive than his previous discoveries.

Pearadin has named the stone the American Dream Diamond.

$1 Million Claim Under Scrutiny

The potential value of the diamond has generated considerable interest, but the US$1 million figure should be treated as a claim rather than an established valuation.

According to the Associated Press, Little Rock based certified gem appraiser Laura Stanley provided a substantially lower preliminary estimate of approximately US$250,000. Her estimate was based on the reported size and quality of the diamond rather than a physical examination and laboratory assessment of the stone.

This illustrates an important point in the diamond market: carat weight alone does not determine value.

Colour, clarity, crystal structure, transparency, fluorescence, proportions, potential for cutting, market demand and, ultimately, the quality and rarity of the finished polished diamond can all have a significant impact on value.

Until the rough stone has been properly examined, documented and assessed, its ultimate market value remains uncertain.

An Unusual Crystal

6.03-carat yellow diamond discovered by an amateur diamond hunter at Arkansas’ famous Crater of Diamond


The diamond is also attracting attention because of its distinctive natural crystal form.

Park officials have described the stone as a 48-sided hexoctahedron, a relatively uncommon crystal shape compared with the 12- and 24-faced diamond crystals more commonly recovered at the site.

For gemmologists and diamond specialists, the natural morphology of a rough diamond can provide valuable information about how the crystal formed and how it may respond to cutting.

The challenge for a cutter is balancing the preservation of weight and unusual characteristics against the potential beauty and marketability of the polished stone.

One of the World’s Most Famous Diamond Fields

The discovery was made at Crater of Diamonds State Park, near Murfreesboro, Arkansas, one of the very few locations in the world where members of the public can search for diamonds in their original volcanic source and keep what they find.

Visitors pay an admission fee and search the approximately 37-acre diamond-bearing field on a finders-keepers basis.

The field represents the eroded surface of an ancient volcanic crater, bringing diamonds from deep within the Earth to the surface over geological time.

Since becoming a state park in 1972, more than 37,000 diamonds have been registered by visitors.

The Uncle Sam Diamond

The most famous discovery from the site is the 40.23-carat Uncle Sam Diamond, found in 1924 during the site’s commercial mining era. It remains the largest diamond ever discovered in the United States.

Other significant discoveries include the 16.37-carat Amarillo Starlight, the 8.52-carat Esperanza Diamond, and a 7.64 carat brown diamond discovered by a French tourist in 2023.

The American Dream Diamond now joins this growing list of notable Arkansas discoveries.

A Discovery Shared

Pearadin discovered the 6.03-carat stone while searching alongside fellow diamond hunter Michael Schumacher. Pearadin has said he intends to share any proceeds from the discovery with Schumacher.

Whether the American Dream Diamond ultimately proves to be a US$1 million stone or something considerably less valuable, its discovery demonstrates why natural diamonds continue to fascinate collectors and the public.

A diamond’s journey from a rough crystal formed deep within the Earth to a polished gem is one of nature’s most extraordinary processes. In rare cases, the rough itself can be remarkable enough to become a collector’s piece.

For the American Dream Diamond, the next stage will be determining exactly what this unusual 6.03-carat natural yellow diamond is and what the market is ultimately prepared to pay for it.

Source: DCLA

Tuesday, 6 October 2026

Boodles Goes Pink with Major Argyle Diamond Acquisition

 British jeweller secures rare Argyle pink diamond inventory as the legacy of Australia’s legendary mine enters a new chapter

British jeweller secures rare Argyle pink diamond inventory as the legacy of Australia’s legendary mine enters a new chapter

British luxury jeweller Boodles has strengthened its position in the highly exclusive world of fancy coloured diamonds after acquiring the remaining inventory of Argyle Pink Diamonds from Rio Tinto, together with ownership of the iconic Argyle Pink Diamonds brand.

The agreement gives Boodles control of the brand, associated trademarks, website and digital assets, as well as a collection of some of the exceptionally rare pink diamonds produced by the Argyle mine in Western Australia.

For Boodles, the transaction represents much more than the acquisition of a collection of diamonds. It is a long term investment in one of the most recognisable and historically significant coloured diamond brands in the world.

Jody Wainwright, joint managing director of Boodles, described the transaction as a significant, long term investment and said the company intends to release the diamonds gradually over approximately a decade.

“Each one is like a Picasso,” he said, reflecting the extraordinary rarity and individuality of the stones.

The Argyle legacy

The Argyle mine, located in Western Australia’s remote East Kimberley region, became synonymous with pink diamonds and, for decades, supplied more than 90 per cent of the world’s pink diamond production.

Mining ceased in November 2020 after the mine had produced approximately 865 million carats of rough diamonds. Yet only a tiny fraction of that enormous production was pink.

According to Rio Tinto, less than 0.1 per cent of Argyle’s total rough diamond production was pink, illustrating why these stones have become so highly prized.

DCLA has previously examined the extraordinary rarity of pink diamonds and the geological processes responsible for their colour in its article on Pink Diamonds.

The closure of Argyle permanently changed the supply equation for pink diamonds. Unlike white diamonds, where new production continues from mines around the world, there is no comparable source capable of replacing Argyle’s extraordinary output of pink diamonds.

This has transformed existing Argyle pink diamonds into a finite historical inventory.

Boodles has had a long relationship with Argyle pink diamonds. The jeweller purchased its first Argyle pink diamond in 1998 and later participated in the famous annual Argyle Pink Diamonds Tender, where some of the world’s finest stones were offered to a select group of international dealers, jewellers and collectors.

Pink diamonds are extraordinarily rare

Pink diamonds occupy a special position within the coloured diamond market.

Unlike blue diamonds, where the colour is generally associated with boron, or many yellow diamonds, where nitrogen plays an important role, the precise cause of the pink colour is associated with structural distortion within the diamond’s crystal lattice.

The geological forces required to create this distortion are exceptionally unusual.

DCLA’s Diamond Colour Authentication and Advanced Diamond Testing explains the importance of determining whether the colour of a fancy coloured diamond is natural or the result of treatment.

This distinction is critical because natural colour is one of the fundamental characteristics that determines the rarity and value of a fancy coloured diamond.

Pink diamonds from around the world

While Argyle became the world’s dominant source of pink diamonds, it was certainly not the only source of important pink stones.

Some of the most significant and celebrated pink diamonds in history have originated from South Africa, Lesotho, Russia, Canada and other African diamond producing nations.

South Africa has a particularly important place in coloured diamond history. The country’s historic diamond mines have produced exceptional pink and other fancy coloured stones, including some of the world’s most famous diamonds.

One of the most important examples is the extraordinary 59.60 carat CTF Pink Star, which was mined by De Beers in South Africa before being cut and polished into the famous Fancy Vivid Pink diamond. DCLA has previously documented the remarkable history of the Pink Star.

Lesotho has also emerged as an important source of exceptional pink diamonds. The Kao mine produced the 108.39 carat rough crystal from which the remarkable Kao Legend Collection was created, including the 20.49 carat Fancy Intense Purplish Pink Kao Legend.

Canada has produced notable coloured diamonds, while Russia’s Siberian diamond mines have also yielded rare pink stones.

The important point is that exceptional pink diamonds can occur in several geological environments. What made Argyle unique was the extraordinary frequency with which its geology produced pink diamonds and the sheer volume of rare coloured stones recovered during the mine’s lifetime.

Provenance matters

The story of Argyle also demonstrates why provenance has become increasingly important in the world of exceptional diamonds.

A diamond may display characteristics associated with a particular mine, but those characteristics do not necessarily constitute scientific proof of origin.

DCLA recently examined this issue in detail in Where Did My Diamond Come From?, explaining the distinction between a diamond displaying characteristics associated with a particular locality and scientifically establishing its geographic origin.

For Argyle diamonds, however, historical documentation, provenance and the established Argyle brand can add another dimension to a stone’s story.

A finite supply

The closure of Argyle has fundamentally altered the market.

The Fancy Color Research Foundation reported that pink diamond prices had increased by almost 390 per cent between 2005 and the second quarter of 2026.

With no new Argyle production coming to market, collectors and investors increasingly focus on provenance, colour intensity, size, quality and historical significance.

DCLA has followed this market closely, including recent coverage of major pink diamonds appearing at international auctions and the continuing demand for exceptional natural coloured diamonds.

The DCLA Pink Diamond archive provides an extensive history of major pink diamonds, auctions and developments in the market.

The world’s auction houses have repeatedly demonstrated the extraordinary prices that exceptional pink diamonds can command.

The CTF Pink Star, a 59.60 carat Fancy Vivid Pink diamond, remains one of the most famous gemstones ever offered at auction. It achieved HK$553 million, approximately US$71.2 million at the time, at Sotheby’s in Hong Kong in 2017.

However, size alone does not determine the value of a pink diamond. In the world of fancy coloured diamonds, colour saturation, hue, distribution, clarity, cut and provenance can have an enormous influence on value.

A small but intensely coloured pink diamond can therefore be considerably more valuable than a much larger stone with a weaker colour.

Boodles builds on a long association with pink diamonds

Pink diamonds already account for approximately 5 per cent of Boodles’ jewellery production by volume.

The company incorporates them into collections including Raindance, Play of Light and Be Boodles, as well as selected engagement rings.

Boodles is also planning a new high jewellery collection inspired by Australia, with Argyle pink diamonds expected to feature prominently.

The company has also incorporated the history of Argyle into its new London premises at 23 Old Bond Street, including an Argyle Lounge featuring jewellery, historical material and artefacts connected with the mine.

Among the items are examples of the original Argyle colour grading system and materials documenting the history of the mine and its remarkable contribution to the coloured diamond industry.

From mine to museum piece

The Boodles acquisition illustrates an important change taking place in the diamond market.

Argyle pink diamonds are no longer simply newly mined commodities. They are increasingly being viewed as pieces of geological and mining history.

Every Argyle pink diamond that has been recovered is now part of a finite population.

The mine is closed, the geological source cannot be replenished and the world’s remaining Argyle pink diamonds will progressively move from miners and dealers into the hands of jewellers, collectors and private owners.

This gives provenance an increasingly important role.

For the diamond industry, Argyle represents one of the clearest examples of how a mine can become a brand in its own right. The combination of geological rarity, Australian provenance, recognised colour grading and a finite supply has created an identity that extends well beyond the intrinsic characteristics of the individual diamond.

DCLA’s recent article on The World’s Most Valuable Coloured Diamonds explores this broader world of natural fancy coloured diamonds and explains why the rarest colours can command extraordinary values.

Boodles’ acquisition ensures that the Argyle Pink Diamonds name will continue to have a place in the luxury jewellery market.

It also highlights a fundamental truth about exceptional coloured diamonds:

When the source disappears, the diamonds already recovered become part of a finite piece of history.

For collectors, the appeal is therefore not simply owning a beautiful pink diamond. It is owning a small piece of the geological history of the Earth — from a mine that will never produce another Argyle pink diamond.

Friday, 2 October 2026

Petra Diamonds Weighs Sale as Diamond-Market Pressures Mount

 Strategic review highlights the financial pressure facing one of Africa’s best-known natural diamond producers

Strategic review highlights the financial pressure facing one of Africa’s best-known natural diamond producers

Petra Diamonds has launched a strategic review that could ultimately lead to the sale of some or all of its assets, as the company faces continuing liquidity pressures, weak natural diamond prices and significant operational challenges at its Finsch mine in South Africa.

The London-listed diamond producer announced on 1 October that, following discussions with key stakeholders including its first and second lien creditors, it would examine all available options for addressing its near-term liquidity requirements. These options include a potential sales process involving the company’s assets. Petra is also in the process of appointing a financial adviser to assist with the review.

At the same time, José Manuel Vargas stepped down as chairman and a director of the company. Lerato Molebatsi has been appointed interim chair.

The developments are significant because Petra is not simply another diamond producer. Over almost three decades, the company has built a portfolio around some of the world’s most historically important diamond mines.

From junior explorer to major diamond producer

Petra Diamonds was first admitted to trading on London’s AIM market in April 1997 with a market capitalisation of approximately £8.75 million. It subsequently moved to the Main Market of the London Stock Exchange in December 2011.

The company’s growth was driven in large part by acquiring diamond assets that were considered non-core by larger mining groups, including De Beers.

Among its most important acquisitions was the Cullinan Mine in South Africa, acquired by Petra in stages from 2008. In 2011, Petra acquired a majority interest in Finsch, one of South Africa’s most significant diamond mines.

Petra subsequently became associated with an extraordinary collection of diamond-producing assets and some remarkable stones.

The Cullinan Mine is perhaps the most famous. Originally known as the Premier Mine, it produced the 3,106-carat Cullinan diamond, the largest gem-quality rough diamond ever discovered. The stone was ultimately cut into several important diamonds, including the Great Star of Africa and the Second Star of Africa, both of which form part of the British Crown Jewels.

Cullinan has also produced some of the world’s most notable blue diamonds, including a Type IIb blue diamond that Petra sold in 2021 for US$40.2 million, equivalent to more than US$1 million per carat.

Finsch has its own remarkable history. The mine has been operating since 1967 and is known for producing commercial-quality diamonds, including larger stones above five carats, as well as occasional exceptional diamonds exceeding 50 carats. Petra has operated the mine since 2011.

Petra’s history also includes the Williamson mine in Tanzania, famous for the Williamson Pink, a 54-carat rough pink diamond discovered in 1947. The polished stone became a gift to Princess Elizabeth, later Queen Elizabeth II. Petra sold its interest in Williamson in 2025 as part of its strategy to streamline its portfolio.

Finsch becomes a major pressure point

The immediate financial problem, however, is centred on Finsch.

The mine entered business rescue in May 2026 and production was subsequently suspended. Petra has said that, despite strong operating performance, the mine’s high proportion of smaller diamonds, combined with the strength of the South African rand and exceptionally difficult market conditions, made the operation economically unsustainable in its existing form.

Petra reported consolidated net debt of approximately US$322 million at 30 June 2026, compared with US$298 million three months earlier. The company said its cash position had become increasingly constrained by weaker diamond prices and the ring-fencing of cash associated with the Finsch business-rescue process.

The company has already secured additional short-term working capital support from its senior lender, including a R300 million facility, while discussions around a broader refinancing have continued.

The latest strategic review therefore represents a further step in Petra’s efforts to protect liquidity and determine how its remaining assets can be structured for the future.

The wider natural diamond squeeze

Petra’s difficulties should also be viewed within the much broader disruption experienced by the natural diamond industry.

Diamond producers, manufacturers, wholesalers and retailers have faced a combination of weaker consumer demand, economic uncertainty, excess inventory, changing purchasing patterns and increased competition from laboratory-grown diamonds.

The result has been substantial pressure on rough diamond prices and on the economics of mining.

Petra’s own history illustrates the dramatic change in the industry. The company produced more than 4.6 million carats in 2018, whereas its current portfolio is considerably smaller following the disposal of several assets.

The company has also undertaken cost reductions, portfolio rationalisation and debt restructuring in an effort to adapt to the new market environment.

For the natural diamond industry, however, there is an important distinction between falling production and falling demand.

A natural diamond supply reset?

Global diamond production has been falling sharply as producers respond to weaker economics. Industry analyst Paul Zimnisky has pointed to the possibility that declining mine supply could eventually help rebalance the market.

Lower production may gradually remove some of the excess supply that has weighed on rough diamond prices. But that does not guarantee an immediate recovery. The industry still needs sustainable consumer demand, healthy inventories and prices that allow mines to operate profitably.

For companies such as Petra, the timing is critical.

A reduction in global mine supply could ultimately provide support for natural diamond prices, but producers carrying substantial debt cannot necessarily wait indefinitely for a future market recovery.

The changing diamond landscape

The difficulties facing Petra also highlight an important reality about diamonds: a diamond mine is a finite natural resource, and maintaining production is extraordinarily capital intensive.

Laboratory-grown diamonds have introduced another layer of competition into the lower and middle sections of the jewellery market. Unlike natural diamonds, laboratory-grown stones can be manufactured in virtually unlimited quantities, meaning their economics are fundamentally different from a scarce geological resource that can take billions of years to form.

This distinction is increasingly important when considering the long-term value proposition of natural diamonds.

Natural diamonds are not simply manufactured products. They are geological rarities, with their supply ultimately constrained by the number of economically viable deposits that exist on Earth.

The challenge for the natural diamond industry is therefore not simply producing diamonds. It is maintaining a balance between scarcity, consumer demand, mine economics and market confidence.

What happens next?

Petra’s strategic review does not mean that a sale will necessarily occur. The company has said that all potential avenues for addressing its liquidity requirements are being considered, with any outcome dependent on the review and discussions with stakeholders.

Possible outcomes could include asset transactions, further financing, restructuring or a broader corporate transaction.

Whatever the eventual outcome, Petra’s situation is a reminder of how dramatically the natural diamond industry has changed.

A company that grew from a small junior explorer in 1997 into the owner and operator of some of the world’s most celebrated diamond assets is now having to reconsider its structure in response to one of the most challenging periods the modern diamond industry has experienced.

For DCLA, the story also reinforces an important point: the rarity and provenance of a natural diamond remain fundamental to understanding what makes exceptional diamonds different from mass-produced alternatives.

From the Cullinan diamond and historic blue diamonds to the Williamson Pink and the exceptional stones recovered at Finsch, Petra’s history is intertwined with some of the most important diamonds ever discovered.

The question now is whether the next chapter of that history will be written under Petra’s ownership — or by a new generation of owners.

Thursday, 1 October 2026

The Death of Class in Influencing: How Quality and Value Have Eroded

 Marilyn MonroeJayne MansfieldMarlon BrandoJames DeanElizabeth TaylorPaul Newman

There was a time when influence, like a diamond, was earned through rarity, pressure, and time.

Look at any photograph of Marilyn Monroe, Elizabeth Taylor, James Dean, Marlon Brando, Paul Newman or Jayne Mansfield and you see more than celebrities. You see presence. Poise. An unforced elegance that did not need to shout. Their influence was the byproduct of talent, mystery and an almost aristocratic sense of self-possession. They did not chase relevance; relevance chased them.

Today that quality feels like a relic both in culture and in the world of diamonds.

From Icon to Content Machine, From Earth to Laboratory

The classic stars understood restraint. Allure was often found in what was withheld. Their public images were curated with care, built over years, and carried lasting cultural weight.

Modern influencing has largely abandoned those standards. Class has given way to spectacle. Quality has been replaced by volume. Value has been reduced to engagement metrics. What was once rare and carefully cultivated is now mass-produced, disposable and frequently coarse.

The same pattern has appeared in the diamond market.

Natural diamonds formed deep in the earth under extreme pressure over billions of years once stood as the ultimate symbol of rarity, permanence and prestige. They required discovery, risk and genuine scarcity. Lab-grown diamonds, by contrast, are manufactured in weeks under controlled conditions. They are chemically identical in many respects, yet they lack the geological story, the scarcity and the cultural weight that gave natural diamonds their enduring class.

The Collapse of Quality and Perceived Value

Quality once meant craft and authenticity. A star’s image, like a natural diamond’s origin, was refined through time and genuine constraint.

Today the influencer economy rewards speed, volume and constant availability. Trends last days. Personas shift weekly. The system privileges the lowest common denominator.

Lab-grown diamonds operate under a parallel logic. They offer visual similarity at a fraction of the price, but they erase the very qualities that made diamonds meaningful: rarity, natural formation and the sense that something unique has been brought into the light. When supply can be increased on demand, scarcity disappears. When origin becomes irrelevant, romance fades. The product remains, but the aura does not.

This is not merely aesthetic. It has commercial and cultural consequences. When influence is cheapened, audiences lose the ability to distinguish genuine authority from manufactured popularity. When diamonds are reduced to interchangeable stones, the language of lasting commitment and true luxury is diluted. Brands that once stood for elevation find themselves adjacent to the disposable.

Value Without Worth

True influence once carried cultural weight measured in longevity and impact. Natural diamonds carried the same kind of value: they were heirlooms, markers of genuine milestones, objects that held meaning across generations.

Much of today’s influencer economy measures value in temporary virality and affiliate codes. The lab-grown market often measures value in price per carat and production efficiency. Both trade lasting worth for immediate accessibility. The relationship becomes transactional. When the transaction ends, so does the connection whether with an audience or with a piece of jewellery.

A Path Back to Class

DCLA exists to protect confidence in diamonds through independent, internationally accredited grading. That mission has never been more relevant. In a marketplace flooded with synthetic alternatives and diluted cultural signals, the distinction between the authentic and the manufactured matters.

Class is not nostalgia. It is a competitive advantage. Quality is not an outdated luxury; it is the only durable form of value. Natural diamonds, like the iconic figures of the past, still carry the weight of genuine rarity and history. They do not need to convince the world they matter. Their origin makes the argument for them.

The same standard remains available in culture and in the diamond industry. It simply requires the courage to choose rarity over replication, substance over spectacle, and lasting value over the merely convenient.

In an age of endless content and endless production, the things that still feel rare are the ones that still feel real.

Wednesday, 30 September 2026

Diamond Certification Australia, Where to Get a Diamond Certificate Worldwide & Why DCLA Leads

 diamond certification Australia, diamond grading laboratory Sydney, where to get a diamond certified, CIBJO accredited laboratory, independent diamond grading

Whether you’re buying an engagement ring, insuring a family heirloom or selling a stone, one document matters more than any other: an independent diamond grading certificate. It is the diamond’s passport, the record of its identity, quality and origin. But not all certificates carry equal weight, and where your diamond is graded can shape its value, its insurability and its resale prospects for decades.

Where to Get a Diamond Certificate Worldwide

Diamond certification is offered by a number of laboratories around the world. In the United States, the Gemological Institute of America (GIA) and the American Gem Society (AGS) are widely known. In Europe, Antwerp is home to HRD Antwerp and the headquarters of the International Gemological Institute (IGI), which also operates extensively across India and Asia. Each has its own strengths, and each serves markets primarily in its own region.

For Australian buyers, sellers and jewellers, however, sending a diamond overseas for grading introduces real complications: international shipping, insurance limitations, customs, weeks of waiting and, most importantly, no chance to see who is grading your stone or ask them questions. That is why a locally based, internationally accredited laboratory matters.

DCLA: 25 Years of Independent Diamond Grading in Australia

The Diamond Certification Laboratory of Australia (DCLA) was established in 2001 in Sydney, marking a quarter of a century serving the Australian diamond trade and public. From its laboratory at Suite 901, Level 9, Citisite House, 155 Castlereagh Street, Sydney, DCLA has become the benchmark for diamond certification in the country. Learn more about DCLA.

International Accreditation: CIBJO, WFDB and IDC

A certificate is only as credible as the standards behind it, and DCLA’s credentials are recognised at the highest levels of the international diamond industry.

CIBJO (The World Jewellery Confederation). DCLA is the official CIBJO laboratory for Australia and holds the CIBJO C2 AU Diamond Masterset for colour comparison. The Masterset is the reference set of stones against which diamond colour is graded, so every DCLA colour grade is anchored to an international standard.

IDC (International Diamond Council) and the WFDB. DCLA is a recognised IDC laboratory, as noted in the WorldFed Newsletter No 6. The IDC is the grading standards body established by the World Federation of Diamond Bourses (WFDB) together with the International Diamond Manufacturers Association, representing the world’s diamond bourses and manufacturers. DCLA’s grading protocols align with CIBJO and IDC standards, so its reports are directly comparable to certificates from other internationally recognised laboratories.

Listed on IDEX and RapNet

Credibility in the trade is measured by acceptance in the global marketplace. DCLA is listed on RapNet and IDEX, the two leading international diamond trading platforms. Diamonds carrying a DCLA report can be listed and traded by dealers worldwide, giving owners of DCLA-certified stones access to international markets, not just local ones.

What Sets DCLA Apart

A written full-replacement guarantee. DCLA is the only laboratory in Australia offering a written full-replacement guarantee on every report. Read about the DCLA Diamond Certificate.

Complete independence. DCLA is privately owned and operated, with no trade funding, influence or conflict of interest.

Transparency you can see. Every diamond is graded on-site in Sydney by qualified gemmologists, and clients can meet the team who grade their diamond. Your stone never disappears into a distant facility. See the technology and grading process.

Uncompromising standards on treatments and colour. DCLA screens every diamond for enhancements and issues grading certificates only for diamonds of natural colour origin. Learn about colour authentication and diamond treatments.

Natural and lab-grown expertise. DCLA certifies both natural and lab-grown diamonds, with clear origin disclosure. Understand synthetic diamonds.

Trusted where it counts. DCLA reports are relied on by jewellers, insurers and courts in Australia and beyond.

Beyond the Certificate

Owners can check a certificate online, protect their stone with cold laser inscription, and use diamond verification and traceability services. DCLA also provides diamond and jewellery valuations, rough and uncut diamond services, bespoke jewellery and independent advice on selling a diamond.

New to diamonds? Start with The 5 C’s of Diamonds, explore diamond shapes, or browse the glossary and picture library.

How to Get Your Diamond Certified in Australia

DCLA services are open to both the public and the trade. All diamonds submitted for grading must be loose, not set in jewellery. Stones can be submitted in person at the Sydney laboratory or by courier, with Secure National Couriers used within Australia and Brinks for international clients. See how to submit a diamond.

The Bottom Line

There are many places in the world to get a diamond certificate. For anyone buying, selling or insuring diamonds in Australia, DCLA offers what overseas laboratories cannot: CIBJO and IDC accreditation, acceptance on IDEX and RapNet, a written guarantee, and the chance to meet the gemmologists grading your stone. After 25 years, DCLA remains Australia’s foremost authority in diamonds.

Have questions? Read the FAQs

6.03 Carat Yellow Diamond Found in Arkansas

  A remarkable 6.03-carat yellow diamond discovered by an amateur diamond hunter at Arkansas’ famous Crater of Diamonds State Park has attra...