Russia Moves to Ban Lab Grown Diamond Terminology in Major Industry Shift

 

The global diamond industry is facing another major terminology debate as Russia introduces some of the strictest rules yet regarding the sale and description of laboratory grown diamonds.

From 1 September 2026, new Russian regulations will restrict how synthetic diamonds can be marketed, with the aim of creating a clearer distinction between natural diamonds and stones produced through laboratory technology. Under the new rules, the word “diamond” and related terms will be reserved for natural diamonds, while laboratory created stones must be identified as “synthetic”.

New Rules Focus on Consumer Transparency

The Russian government has stated that the changes are designed to improve transparency and prevent consumers from confusing synthetic stones with natural diamonds. Retailers will be required to clearly disclose the origin of the stone, and synthetic diamonds will need to be labelled accordingly.

The new regulations also restrict the use of traditional diamond terminology when describing synthetic stones. Words associated with natural diamonds, including “natural”, “genuine”, “real”, “precious”, “mined” and similar descriptions, will not be permitted in connection with synthetic products.

In addition, synthetic stones will not be marketed using traditional diamond grading language relating to colour, clarity or carat weight. Instead, their weight must be disclosed in grams rather than carats under the new framework.

A Clear Divide Between Natural and Laboratory Created Diamonds

The move reflects a growing global discussion about how the jewellery industry communicates the difference between natural diamonds and laboratory grown diamonds.

Natural diamonds are formed deep within the Earth over billions of years and are valued for their rarity, geological history and limited supply. Laboratory grown diamonds are created using advanced technology that replicates the conditions required for diamond formation, producing stones with the same chemical composition and crystal structure as natural diamonds.

The key difference is not the material itself, but the origin and rarity.

Impact on the Global Diamond Market

Russia is one of the world’s largest producers of natural diamonds, and the introduction of stricter terminology rules comes at a time when laboratory grown diamond production has expanded rapidly worldwide.

The rise of laboratory grown diamonds has transformed parts of the jewellery market, particularly among consumers seeking larger stones at lower prices. However, the significant price decline of many laboratory grown diamonds has also raised questions about long term value, resale potential and the role of rarity in diamond ownership.

For the natural diamond industry, clear terminology remains a central issue. Industry organisations have long argued that consumers should understand exactly what they are purchasing and that natural diamonds and laboratory grown diamonds should not be marketed in a way that creates confusion.

The Importance of Independent Diamond Certification

As the market continues to evolve, independent diamond certification remains essential. A professional grading report provides consumers with confidence by identifying whether a stone is natural or laboratory grown and documenting its characteristics.

Laboratories such as the Diamond Certification Laboratory of Australia play an important role in maintaining transparency and trust within the diamond trade through scientific examination and accurate reporting.

The Russian decision highlights a broader global movement towards clearer diamond disclosure. As technology continues to reshape the industry, accurate terminology and independent verification will remain critical in protecting consumer confidence.

Source: DCLA

Natural Diamonds Face a Defining Period of Change and Opportunity

 

The natural diamond industry is entering a crucial period of transformation, with market leaders highlighting the key forces that will shape demand, supply and consumer confidence over the next five years.

According to analysis from De Beers, rebuilding demand for natural diamonds will depend on several important industry priorities, including stronger marketing, clearer differentiation from lab grown diamonds and a more balanced supply environment.

Marketing Remains Critical for Natural Diamond Demand

De Beers believes effective marketing will play a central role in restoring consumer desire for natural diamonds. After a period of changing consumer behaviour and economic uncertainty, the industry must continue to communicate the unique emotional value, rarity and enduring legacy of natural diamonds.

Building a stronger connection with younger consumers will be essential to ensuring natural diamonds maintain their position as symbols of love, commitment and achievement.

Lab Grown Diamond Pricing Faces Growing Pressure

The rapid growth of synthetic lab grown diamonds has created a new competitive landscape for the diamond industry.

However, current retail margins on lab grown diamonds are expected to face increasing pressure as competition expands and production continues to rise. As prices decline, the industry believes consumers will increasingly focus on understanding the differences between natural diamonds and laboratory created alternatives.

Differentiation Becomes Key to Consumer Confidence

Clear education and transparency will be vital for the future of the diamond market.

Natural diamonds are formed over billions of years beneath the earth’s surface, while lab grown diamonds are created through technological processes in controlled environments. Ensuring consumers understand these differences will be important in maintaining confidence and value perception.

Independent grading and certification from recognised laboratories such as DCLA will continue to play an important role in providing consumers with trust and assurance when purchasing natural diamonds.

Declining Rough Diamond Supply Could Support Long Term Market Balance

Another major factor shaping the future of natural diamonds is declining global rough diamond production.

With several major mines reaching maturity and fewer large discoveries entering production, supply is expected to reduce over the medium to long term. A tighter supply environment could help support a healthier balance between availability and demand.

Russia Introduces New Rough Diamond Export Duty

Russia is set to introduce an 8% export duty on rough diamonds weighing 0.45 carats or more from September 1.

The new measure, announced through a government decree, adds another layer of complexity to the global rough diamond supply chain. Russia remains one of the world’s largest diamond producers, meaning changes to its export policies can influence international market dynamics.

AWDC Launches First Sale of Traceable Artisanal Diamonds from Congo

The Antwerp World Diamond Centre has completed its first sale of artisanally mined rough diamonds from the Democratic Republic of Congo through the OrigemA programme.

Established in 2022 as a partnership between Belgium and the DRC, OrigemA aims to connect small scale Congolese miners with international markets by providing fully traceable artisanal diamonds.

The programme is designed to improve market access for artisanal miners while ensuring they receive fair value for their production. The DRC accounts for a significant share of global artisanal diamond output, making responsible sourcing initiatives increasingly important for the future of the industry.

Petra Diamonds Faces Ongoing Industry Pressure

Petra Diamonds continues to experience the challenges affecting many mid tier diamond producers as the industry works through a prolonged period of market disruption.

Lower rough diamond prices, weaker luxury demand in key markets and increased competition from lab grown diamonds have created financial pressure across the sector.

The company’s restructuring challenges highlight the broader issues facing producers with concentrated operations and single commodity exposure. The coming years are expected to test the resilience of diamond miners as the industry adjusts to changing consumer demand and evolving market conditions.

The Future of Natural Diamonds

The next five years will be a defining period for the natural diamond industry.

Success will depend on strengthening consumer confidence, improving education, supporting responsible sourcing and reinforcing the unique value of natural diamonds.

While the market faces significant challenges, declining supply, stronger differentiation and renewed storytelling around natural diamonds could create the foundation for a more balanced and sustainable future.

Source: DCLA

De Beers Sale Nears Final Chapter as Anglo American Moves to Exit Diamond Business

 

The long awaited sale of De Beers appears to be approaching its final stage, with Anglo American expected to complete the transaction before the middle of 2026 as the mining giant continues its strategic shift away from diamonds.

Speaking on 16 June at the Reuters NEXT Europe economic summit in London, De Beers CEO Al Cook indicated that the sale process could be concluded within “a few weeks, rather than a few months”, signalling that one of the most significant transitions in the modern diamond industry is moving closer to completion.

After more than a century as one of the most influential names in the global diamond trade, De Beers is entering a new era. Anglo American began reviewing its portfolio in 2023 as part of a broader strategy focused on commodities with stronger long term growth potential, including copper, iron ore and minerals linked to the global energy transition.

The shift comes after a challenging period for the diamond market. Between 2022 and 2025, De Beers experienced a substantial decline in financial performance, with sales falling from approximately US$6.6 billion in 2022 to around US$3.5 billion in the latest reporting period. Production also declined from approximately 35 million carats to 21.7 million carats.

Changing Consumer Demand Reshapes the Diamond Market

The decline in luxury spending in China, combined with the rapid growth of lab grown diamonds in the United States, has placed significant pressure on demand for natural diamonds.

The market has experienced three consecutive years of weaker demand, forcing the industry to reassess supply, pricing strategies and the long term role of natural diamonds in the luxury sector.

Despite these challenges, interest in acquiring De Beers remains strong. The company continues to attract potential buyers, including strategic investors, diamond producing nations and experienced industry figures.

Botswana, which already owns a 15 per cent stake in De Beers, has been exploring opportunities to increase its involvement alongside international partners. Diamonds remain central to Botswana’s economy, representing a major share of export earnings and a significant contributor to national GDP.

A greater ownership position could allow Botswana to capture more value from the diamond supply chain and increase its influence over the future direction of the global diamond industry.

Future Diamond Supply Could Support Prices

While the short term market remains challenging, potential buyers are also focused on the longer term fundamentals of diamonds, particularly the issue of supply scarcity.

The discovery of major new diamond deposits has slowed significantly. The Luele mine in Angola is regarded as one of the most important discoveries of the past two decades, while several established mines in Canada and southern Africa are expected to reduce production or close in the coming years.

As global production declines, the balance between supply and demand could begin to shift. A tighter supply environment may provide support for natural diamond prices over the medium to long term.

The sale of De Beers represents more than a corporate transaction. It marks the end of an era for one of the most recognised names in luxury and signals a new chapter for the global diamond industry, where ownership, supply control and changing consumer preferences will shape the future of natural diamonds.

Source: DCLA

The Heart of Eternity Diamond: The Extraordinary Blue Diamond That Could Redefine Rarity

 

Among the world’s most exceptional gemstones, few diamonds capture the imagination quite like the Heart of Eternity Diamond. A 27.64 carat Fancy Vivid Blue heart shaped diamond, this extraordinary gem represents one of the rarest combinations in the diamond world: exceptional size, intense colour, remarkable clarity, and a story filled with mystery, intrigue, and immense value.

Blue diamonds are among the rarest natural diamonds ever discovered. Their colour comes from trace amounts of boron trapped within the diamond crystal structure during formation deep beneath the Earth’s surface. Unlike traditional colourless diamonds, where rarity is often measured by size and clarity, coloured diamonds are judged by the strength and beauty of their colour, with vivid blues commanding extraordinary premiums.

The Heart of Eternity Diamond sits at the highest level of this category, officially graded Fancy Vivid Blue by the Gemological Institute of America (GIA), placing it among the finest blue diamonds ever evaluated.

A Diamond Born from One of the World’s Most Famous Mines

The story of the Heart of Eternity Diamond begins at the legendary Cullinan Diamond Mine in South Africa, formerly known as the Premier Diamond Mine.

This historic mine has produced some of the most important diamonds in history, including the famous Cullinan Diamond, discovered in 1905. The Cullinan Diamond weighed an extraordinary 3,106 carats in rough form and was later cut into nine major diamonds, many of which became part of the British Crown Jewels.

The same geological conditions that created the Cullinan Diamond also produced some of the world’s most valuable blue diamonds, including the Heart of Eternity.

A Gemstone From a Category of Extreme Rarity

At 27.64 carats, the Heart of Eternity is not the largest blue diamond ever discovered, but its combination of size, colour, and shape places it in a category occupied by only a handful of legendary stones.

Natural blue diamonds represent only a tiny fraction of all diamonds mined worldwide. Within that group, stones with a vivid blue colour, significant carat weight, and exceptional quality are almost impossible to replace.

The heart shape adds another layer of uniqueness. While round brilliant diamonds dominate the market for maximum brilliance, a perfectly executed heart shaped diamond requires exceptional rough material and highly skilled cutting to preserve both beauty and weight.

The Mystery Behind the Diamond

The Heart of Eternity Diamond was revealed to the world in the late 1990s after being cut from a much larger rough blue diamond. It became part of the collection of De Beers, which showcased the stone as one of the most remarkable examples of natural blue diamond beauty.

The diamond later attracted significant attention when reports linked it to private ownership and high profile collectors. Like many of the world’s greatest diamonds, its current ownership has remained surrounded by secrecy, adding to its legendary status.

A Value That Could Reach Historic Levels Today

When exceptional blue diamonds appear at auction, they frequently achieve some of the highest prices ever recorded for gemstones.

The famous Blue Moon of Josephine, a 12.03 carat Fancy Vivid Blue diamond, sold for more than US$48 million in 2015, setting a record price per carat at the time.

The Heart of Eternity Diamond is more than twice the size of the Blue Moon of Josephine, while also possessing the highly desirable Fancy Vivid Blue classification. If a diamond of this quality entered the market today, many experts believe it could command a valuation reaching hundreds of millions of dollars.

Why the Heart of Eternity Matters to the Diamond World

The Heart of Eternity Diamond represents more than just a beautiful gemstone. It is a geological miracle, created over billions of years under extreme conditions, then transformed by human craftsmanship into a piece of natural art.

For diamond professionals and collectors, stones like the Heart of Eternity demonstrate why exceptional natural diamonds remain among the world’s most sought after assets. Their rarity cannot be manufactured, their history cannot be replicated, and their value is driven by the simple reality that there are only a few truly exceptional examples in existence.

At DCLA, the study, grading, and understanding of diamonds is built around recognising these unique characteristics. Every extraordinary diamond tells a story, from its formation deep within the Earth to the moment it is revealed as one of nature’s rarest creations.

Natural Diamonds at a Turning Point: De Beers Sale Signals a New Era for the Global Diamond Industry

 

The natural diamond industry is entering a defining period of transformation as one of the world’s most influential diamond companies, De Beers, moves closer to a change in ownership while the broader market shows early signs of recovery after several challenging years.

De Beers CEO Al Cook has indicated that a sale of the diamond giant could be completed within weeks rather than months, bringing to a close a two year process of negotiations. Speaking at the Reuters NEXT Europe conference in London, Cook said discussions have reached an advanced stage and that the company is closer to a sale than ever before.

Anglo American placed its 85% stake in De Beers on the market in May 2024 as part of a wider restructuring strategy following a prolonged downturn in diamond prices, weaker consumer demand, and the rapid growth of lab grown diamonds.

De Beers remains one of the most important names in the global diamond industry, with operations spanning Botswana, Namibia, Angola, South Africa, and Canada. The company has played a central role in shaping the natural diamond market for more than a century.

The potential buyers include diamond producing nations and strategic investors. Botswana, which already owns a 15% stake in De Beers, along with Namibia and Angola, have shown interest through various partnerships. These countries recognise the importance of diamonds to their economies and are looking to secure a stronger role in the future direction of the industry.

Cook highlighted that the current interest comes from groups with deep diamond knowledge, creating the opportunity for a strong public private partnership that could support the next chapter of De Beers.

Sources indicate that the number of potential buyers has narrowed from six groups in 2025 to two remaining consortia. These include diamond producing governments, former De Beers CEO Gareth Penny, investment groups, and international investors.

Natural Diamond Market Recovery Begins to Take Shape

While the industry has faced significant pressure since 2021, the market is showing signs of reaching a turning point.

The downturn was driven by several major structural changes. The rapid expansion of lab grown diamonds transformed consumer expectations, with improvements in CVD and HPHT technology allowing synthetic diamonds to become widely available at significantly lower prices.

This created pressure across the natural diamond pipeline as consumers became more focused on size and appearance rather than rarity and long term value.

At the same time, weaker luxury demand, particularly in China, reduced one of the industry’s most important growth markets. The slowdown affected miners, manufacturers, retailers, and diamond producing nations.

Botswana, the world’s largest diamond producer by value, experienced economic pressure as declining diamond revenues impacted national growth. The challenges highlighted the importance of diamonds not only as a luxury product but as a critical economic resource for producing countries.

A New Diamond Market Structure

The current recovery is unlikely to mirror previous diamond cycles. The industry is entering a new era where scarcity, provenance, quality, and consumer trust will become increasingly important.

Natural diamonds and lab grown diamonds are moving into different market positions. Lab grown diamonds compete primarily on affordability, while natural diamonds continue to represent rarity, geological history, and emotional value.

The potential sale of De Beers could become a major milestone in reshaping the future of the natural diamond sector. New ownership, combined with improving market fundamentals and a renewed focus on the uniqueness of natural diamonds, may help create the foundation for the next phase of the industry.

For the global diamond market, 2026 could represent not just a recovery year, but the beginning of a new chapter.The natural diamond industry is entering a defining period of transformation as one of the world’s most influential diamond companies, De Beers, moves closer to a change in ownership while the broader market shows early signs of recovery after several challenging years.

De Beers CEO Al Cook has indicated that a sale of the diamond giant could be completed within weeks rather than months, bringing to a close a two year process of negotiations. Speaking at the Reuters NEXT Europe conference in London, Cook said discussions have reached an advanced stage and that the company is closer to a sale than ever before.

Anglo American placed its 85% stake in De Beers on the market in May 2024 as part of a wider restructuring strategy following a prolonged downturn in diamond prices, weaker consumer demand, and the rapid growth of lab grown diamonds.

De Beers remains one of the most important names in the global diamond industry, with operations spanning Botswana, Namibia, Angola, South Africa, and Canada. The company has played a central role in shaping the natural diamond market for more than a century.

The potential buyers include diamond producing nations and strategic investors. Botswana, which already owns a 15% stake in De Beers, along with Namibia and Angola, have shown interest through various partnerships. These countries recognise the importance of diamonds to their economies and are looking to secure a stronger role in the future direction of the industry.

Cook highlighted that the current interest comes from groups with deep diamond knowledge, creating the opportunity for a strong public private partnership that could support the next chapter of De Beers.

Sources indicate that the number of potential buyers has narrowed from six groups in 2025 to two remaining consortia. These include diamond producing governments, former De Beers CEO Gareth Penny, investment groups, and international investors.

Natural Diamond Market Recovery Begins to Take Shape

While the industry has faced significant pressure since 2021, the market is showing signs of reaching a turning point.

The downturn was driven by several major structural changes. The rapid expansion of lab grown diamonds transformed consumer expectations, with improvements in CVD and HPHT technology allowing synthetic diamonds to become widely available at significantly lower prices.

This created pressure across the natural diamond pipeline as consumers became more focused on size and appearance rather than rarity and long term value.

At the same time, weaker luxury demand, particularly in China, reduced one of the industry’s most important growth markets. The slowdown affected miners, manufacturers, retailers, and diamond producing nations.

Botswana, the world’s largest diamond producer by value, experienced economic pressure as declining diamond revenues impacted national growth. The challenges highlighted the importance of diamonds not only as a luxury product but as a critical economic resource for producing countries.

A New Diamond Market Structure

The current recovery is unlikely to mirror previous diamond cycles. The industry is entering a new era where scarcity, provenance, quality, and consumer trust will become increasingly important.

Natural diamonds and lab grown diamonds are moving into different market positions. Lab grown diamonds compete primarily on affordability, while natural diamonds continue to represent rarity, geological history, and emotional value.

The potential sale of De Beers could become a major milestone in reshaping the future of the natural diamond sector. New ownership, combined with improving market fundamentals and a renewed focus on the uniqueness of natural diamonds, may help create the foundation for the next phase of the industry.

For the global diamond market, 2026 could represent not just a recovery year, but the beginning of a new chapter.

Source: DCLA

10 Carat Blue Diamond Expected to Achieve Over $6 Million at Sotheby’s High Jewelry Auction

 

A rare 10.02 carat fancy intense blue diamond is set to become the centrepiece of Sotheby’s highly anticipated High Jewelry auction in New York, with an estimated value exceeding $6 million.

The exceptional unmounted diamond is a cut cornered rectangular modified brilliant cut and represents a significant rarity in the auction market. It is only the third fancy intense blue diamond weighing 10 carats or more to appear at auction since 2008, highlighting the extraordinary scarcity of these coveted coloured diamonds.

The auction will also feature a selection of remarkable coloured diamond jewels, with several lots carrying estimates above $1 million.

Among the highlights is a 13.77 carat fancy light purplish pink diamond, a cut cornered rectangular stone estimated between $1.5 million and $2 million. Another standout piece is a 6.76 carat fancy grayish blue cushion cut diamond ring, surrounded by pink diamonds and complemented by shield cut diamonds, with an estimate of $1.2 million to $1.8 million.

A 5.02 carat oval fancy intense pink diamond, accompanied by two light pink diamond side stones weighing over 0.40 carats each, carries an estimate of $2 million to $3 million. A 4.19 carat fancy purple pink oval diamond ring, enhanced with round diamonds along the band, is expected to achieve between $1 million and $1.5 million.

The cover lot of the sale is a spectacular 1960s diamond necklace created by Harry Winston. Unlike the house’s traditional designs that often feature marquise and pear shaped diamonds, this exceptional piece focuses on round diamonds. Containing more than 120 carats of diamonds, the necklace features trefoil clusters of marquise diamonds combined with round diamond pairings and can also be transformed into two bracelets. It carries an estimate of $800,000 to $1.2 million.

Continuing its collaboration with De Beers, Sotheby’s will also offer an 11.33 carat internally flawless old mine cut diamond with D colour and Type IIa classification, estimated at $600,000 to $800,000. The sale will also include two rings featuring 2.01 carat pear shaped diamonds, with part of the proceeds benefiting the Peace Parks Foundation, a conservation charity co founded by the late Nelson Mandela.

Other highlights include five exceptional Paraiba tourmalines ranging from 6.11 to 8.48 carats, sourced from a private collection. These rare gemstones will be offered individually, apart from one matching pair. The most valuable Paraiba tourmaline is estimated at $350,000 to $550,000.

The auction will also showcase important historic jewellery, including a diamond necklace created by René Lalique in the 1890s. The piece comes with significant provenance, having belonged to descendants of Elizabeth Sarah Morgan Jay, who was believed to have received it as a wedding gift from her relative J. P. Morgan in 1910.

Sotheby’s latest High Jewelry auction once again demonstrates the continued global demand for exceptional coloured diamonds, rare gemstones, and historically important jewels, where rarity, provenance, and craftsmanship continue to drive record breaking valuations.

Source: DCLA

Tiffany & Co Re-opens Stores after $6m Fine

 

Tiffany & Co has been allowed to re-open three stores in Indonesia, after paying a $6.1 million fine for alleged import violations.

They were closed in February by customs authorities pending checks on whether the company had paid levies on imported goods.

The Jakarta Customs and Excise Directorate General subsequently conducted an audit and issued a bill for Rp 97.49 billion (USD 6.1 million) for Tiffany & Co’s alleged customs violations, including administrative sanctions and unpaid taxes such as import duties, VAT, and income tax.  

Tiffany & Co, part of the LVMH conglomerate, paid the fine and agreed to comply with all applicable laws and regulations, but has made no admission of wrongdoing.

Indonesia’s finance minister Purbaya Yudhi Sadewa personally oversaw the removal of the customs seal at the Plaza Indonesia store on 8 June.

He has been at the forefront of a very public crackdown on undeclared high-value goods and his presence is seen as a clear warning to other luxury brands.

The Tiffany case is not isolated. Bening Luxury, a Jakarta-based diamond jewelry store, was closed at around the same time and remains closed, also over suspected customs.

We have reached out to Tiffany & Co for comment.

Source: IDEX

US Consumers Continue to Prefer Natural Diamonds, De Beers Study Reveals

 

New research from De Beers highlights continued strong consumer demand for natural diamonds in the United States, with natural diamond jewellery remaining the most desired choice among luxury jewellery buyers.

The latest US Diamond Acquisition Study, based on insights from 18,500 women across the US, reveals that consumers continue to view natural diamonds as a symbol of value, celebration and personal achievement.

The study found that natural diamonds rank as the most desirable luxury jewellery gift, with 11% of women choosing natural diamond jewellery as their preferred option. This places natural diamonds ahead of lab-grown diamonds at 8%, other gemstones at 5%, and plain gold jewellery at 4%.

Average spending on diamond jewellery has also increased significantly. The average purchase price for natural diamond jewellery reached $4,063 in 2025, up from $3,242 in 2023, driven by consumers choosing larger diamond sizes, with the average total carat weight increasing from 1.65 carats to 1.86 carats.

One of the key findings is the growing influence of Generation Z, which has become the second largest generation of diamond buyers. Gen Z now represents 23% of natural diamond demand value despite making up only 18% of the population.

Younger consumers are also spending more on natural diamonds, with Gen Z buyers spending an average of $4,080 per purchase compared with $2,250 for Baby Boomers.

While engagements and weddings remain important drivers of diamond demand, the way consumers purchase diamonds is changing. Three quarters of US diamond demand now comes from non-bridal occasions, including birthdays, career milestones, promotions, personal achievements and self-purchase.

De Beers found that Gen Z buyers are particularly motivated by self-expression, viewing diamonds as a reflection of personal identity. They also rely heavily on social media when researching jewellery purchases.

Diana Mitkov from De Beers’ Diamond Demand Insights & Analytics team said the findings show that consumers continue to aspire to own natural diamonds, while the reasons behind purchases are evolving.

“Traditional milestones such as engagements are no longer the only occasions where consumers celebrate with diamonds. Today’s buyers are looking for meaningful pieces that reflect their own stories and achievements.”

The report also highlighted positive trends among independent US jewellers. Retail data from 950 stores showed natural diamond sales increased by 4% year-on-year in the fourth quarter of 2025 and 9% in the first quarter of 2026.

Coloured and lower-colour natural diamonds, promoted through De Beers’ “Desert Diamonds” campaign, performed particularly well, with sales growth of 15% and 19% respectively.

While lab-grown diamond jewellery continues to grow in volume, falling prices have reduced its overall value share. In 2025, natural diamonds represented approximately 85% of independent jewellers’ diamond sales value compared with 15% for lab-grown diamonds.

The study also found that sales of larger lab-grown diamonds decline once stones reach 3 carats or more, suggesting consumers may question the value and appeal of very large synthetic diamonds.

De Beers believes the future of natural diamonds will be supported by changing supply and demand dynamics. Declining global natural diamond production is expected to help create a healthier supply balance, while improving demand conditions in key markets are providing renewed confidence for the industry.

The findings reinforce the ongoing appeal of natural diamonds as rare, unique creations of nature, with consumers continuing to value their emotional significance, individuality and long-term meaning.

Source: DCLA

Two Blue Diamonds Achieve More Than $8 Million Each at Christie’s Magnificent Jewels Auction

 

Rare coloured diamonds once again demonstrated their extraordinary appeal, with two exceptional blue diamonds selling for more than $8 million each at Christie’s Magnificent Jewels auction in New York.

The highlight was the Azure Blue, a remarkable 31.62 carat pear modified brilliant cut blue diamond. Graded internally flawless, VVS1 clarity and classified as a Type IIb diamond, the exceptional stone achieved $8.4 million, selling within its pre sale estimate.

Another standout was a 5.04 carat fancy vivid blue diamond ring, a marquise modified brilliant cut stone with VVS2 clarity and Type IIb classification, which sold for $8.1 million, exceeding expectations and highlighting the continued demand for the world’s rarest coloured diamonds.

The auction generated a total of $49.7 million, with all 143 lots finding buyers. Alongside the blue diamonds, exceptional sapphires, rubies, emeralds and signed jewellery from renowned houses including Graff, Cartier and Bulgari attracted strong international interest.

“From rare blue diamonds to extraordinary sapphires and rubies, the strength of demand across categories, particularly coloured stones, underscores the global enthusiasm for jewels of beauty, rarity, and provenance,” said Claibourne Poindexter, head of jewellery for the Americas at Christie’s.

Other notable results included:

• A 41.29 carat Ceylon sapphire ring, which achieved $2.3 million against a $600,000 to $800,000 estimate.

• A 15.40 carat Kashmir sapphire ring, selling for $2.2 million.

• A Graff ring featuring a 30 carat Ceylon sapphire, which achieved $1.8 million.

• A pair of David Morris earrings featuring Burmese rubies and exceptional diamonds, selling for $1.4 million.

• A historic circa 1900 brooch featuring an 18.27 carat D colour diamond and natural saltwater pearls, achieving $1.2 million.

The results reinforce the enduring strength of the luxury gemstone market, where rarity, exceptional quality, and provenance continue to drive demand. As collectors compete for truly unique natural gems, exceptional coloured diamonds remain among the most sought after treasures in the world of fine jewellery.

Source: DCLA