Monday, 8 June 2026

Alrosa Reports Strongest Diamond Demand in Eight Years

 Russian diamond producer Alrosa has reported its highest level of customer interest in eight years, with diamond viewings during May more than doubling compared with the same period last year.

Russian diamond producer Alrosa has reported its highest level of customer interest in eight years, with diamond viewings during May more than doubling compared with the same period last year.

According to the company, the strongest demand was concentrated in diamonds exceeding 10.80 carats and rare fancy colour diamonds. The increase reflects a growing appetite for high value and investment grade diamonds at a time when supplies of large natural stones remain constrained.

Alrosa noted that approximately 80% of its 2 to 10 carat diamond assortment has recorded price increases of between 6% and 9% since the beginning of the year. These categories are commonly sought by collectors, investors and high end jewellery manufacturers.

The company conducts a substantial portion of its sales through auctions and tenders, including electronic bidding platforms that allow clients to purchase stones without physically inspecting them. Traditional viewings continue to be held through the United Selling Organization, the central hub of Alrosa’s diamond distribution network.

Dmitry Beresnev, Deputy Chief Executive Officer of Alrosa and Director of the United Selling Organization, stated that demand for large and rare fancy colour diamonds is increasing in response to growing shortages within this segment of the market.

He added that the number of viewings conducted during May nearly doubled the annual average and exceeded pre-pandemic levels recorded in 2019, suggesting a gradual recovery in global diamond demand.

JCK Las Vegas Highlights Growing Demand for Lab Grown and Affordable Luxury Jewellery

At the recent JCK Las Vegas jewellery exhibition, jewellery manufacturer Stuller unveiled a range of new products reflecting changing consumer preferences across the jewellery sector.

At the recent JCK Las Vegas jewellery exhibition, jewellery manufacturer Stuller unveiled a range of new products reflecting changing consumer preferences across the jewellery sector.

Among the new introductions were fancy shaped laboratory grown diamonds, including elongated ovals, old mine elongated cushions and octagonal cuts, available in both brilliant and step cut faceting styles. The company has also expanded its natural diamond offering to include old mine elongated cushion shapes, a vintage inspired cut that continues to gain popularity.

Stuller also revealed new laboratory grown gemstone colours including magenta, periwinkle and mauve, broadening design options for contemporary jewellery collections.

In response to record gold prices and ongoing inflationary pressures, the company has significantly expanded its demi-fine jewellery range. The collection includes sterling silver, 18 carat gold plated, 14 carat gold filled and vermeil jewellery, providing consumers with more affordable luxury alternatives.

The growing demi-fine category has become increasingly attractive to consumers seeking everyday jewellery with premium styling at accessible price points.

Another notable launch was Stuller’s new gemstone selector set, designed to assist customers in visualising gemstone sizes, proportions and shapes before purchase. The set includes emerald, round, pear, oval, square and marquise shapes and aims to improve the jewellery selection process for both retailers and consumers.

Market Perspective

The developments reported by both Alrosa and Stuller highlight two significant trends currently shaping the diamond and jewellery industry. On one hand, demand for large, rare natural diamonds continues to strengthen amid tightening supply. On the other, rising precious metal prices and changing consumer spending habits are accelerating growth in laboratory grown diamonds and demi-fine jewellery categories.

Together, these trends illustrate an increasingly bifurcated market, where high value natural diamonds remain sought after by collectors and investors, while affordability and versatility continue to drive growth in alternative luxury segments.

Thursday, 4 June 2026

Unseen Imperial Russian Jewels for Sale

 Rare Imperial Russian jewels, including Catherine the Great's diamonds

Rare Imperial Russian jewels, including Catherine the Great’s diamonds, and a Faberge necklace from the reign of Nicholas II, are to be offered for sale by Sotheby’s New York.

“It is difficult to overstate their rarity and historical importance,” said the auction house as it announced its Artistic Luxury: Faberge, Gold Boxes, Silver & Ceramics Art sale, on 17 June.

 “These jewels carry with them a fascinating window into the luxury and opulence of the Russian Imperial court.”

They were confiscated as part of the Russian State Jewels by the Soviet government after the 1917 revolution and have not been seen for over a century.

Three lots – all silver and diamond-set flower dress trimming by Louis David Duval of Geneva – belonged to Catherine the Great (1729 – 1796), with estimates between $30,000 and $80,000.

They were sold by Christie’s on behalf of the Soviet People’s Commissariat of Finance in 1927 to a noted dealer and are currently in a private European collection. 

Also being offered for sale is a larger trimming, of diamonds and Ceylon sapphire, that belonged Catherine’s predecessor, Empress Elizabeth Petrovna (1741-1762). Estimate $40,000 – $60,000.

Highlight of the sale is an Imperial Faberge diamond and aquamarine necklace from the reign of Emperor Nicholas II (1868 – 1918) with an estimate of $400,000 – $600,000.

Source: DCLA

Wednesday, 3 June 2026

The 24 Most Important Diamonds in History

 Cullinan Diamond

Size, History, Master Cutters and Present Locations

Diamonds have fascinated humanity for centuries. Some became symbols of royal power, others transformed the science of diamond cutting, and a few achieved legendary status because of their extraordinary size and rarity.

The following list combines size, historical importance, rarity and influence on the diamond industry.

1. Cullinan Diamond

Cullinan Diamond

Rough Weight: 3,106.75 carats
Found: South Africa, 1905
Polished By: Joseph Asscher
Current Location: British Crown Jewels

The Cullinan remains the largest gem quality rough diamond ever discovered. It was cut into nine principal diamonds and 96 smaller stones. The largest, Cullinan I, weighs 530.2 carats and remains one of the world’s most famous diamonds.

Estimated Value Today: US$2 billion+ (insurance estimates vary greatly).


2. Golden Jubilee Diamond

Golden Jubilee Diamond

Polished Weight: 545.67 carats
Found: South Africa
Polished By: Gabriel Tolkowsky
Current Location: Thailand Royal Treasury

The largest faceted gem quality diamond in the world.

Estimated Value: US$100 million to US$250 million.


3. The Incomparable

The Incomparable

Polished Weight: 407.48 carats
Found: Democratic Republic of Congo
Current Location: Private ownership

A fancy brownish yellow diamond renowned for its size and unusual triangular shape.

Estimated Value: US$20 million to US$50 million.


4. Cullinan I (Great Star of Africa)

Cullinan I (Great Star of Africa)

Weight: 530.2 carats
Current Location: Sovereign’s Sceptre, British Crown Jewels.


5. Cullinan II (Second Star of Africa)

Cullinan II (Second Star of Africa)

Weight: 317.4 carats
Current Location: Imperial State Crown.


6. Centenary Diamond

Centenary Diamond

Weight: 273.85 carats
Found: Premier Mine, South Africa
Polished By: Master cutters employed by De Beers

One of the most perfect large diamonds ever cut.

Estimated Value: US$100 million+.


7. Koh-i-Noor

Koh-i-Noor

Weight: 105.6 carats
Current Location: British Crown Collection

Perhaps the most famous diamond in history, originating in India and passing through Mughal, Persian, Afghan and British hands.

Estimated Value: Effectively priceless.


8. Hope Diamond

Hope Diamond

Weight: 45.52 carats
Current Location: Smithsonian Institution

The world’s most famous blue diamond.

Estimated Value: US$250 million to US$350 million.


9. Lesedi La Rona

Lesedi La Rona

Rough Weight: 1,109 carats
Found: Botswana

One of the largest gem quality rough diamonds ever discovered. Purchased by Laurence Graff for US$53 million.


10. Sewelô

Sewelô

Rough Weight: 1,758 carats
Found: Botswana

Second largest rough diamond ever recovered. Acquired by Louis Vuitton and HB Antwerp.


11. Excelsior

Excelsior diamond

Rough Weight: 995.2 carats
Found: South Africa

Largest diamond before the discovery of the Cullinan. Cut by the Asscher family.


12. Lesotho Promise

Lesotho Promise

Rough Weight: 603 carats
Current Location: Cut into 26 diamonds by Graff.


13. Regent Diamond

Regent Diamond

Weight: 140.64 carats
Current Location: Louvre Museum

One of the finest historic diamonds in existence.


14. Orlov Diamond

Orlov Diamond

Weight: 189.6 carats
Current Location: Russian Diamond Fund


15. Daria-i-Noor

Daria-i-Noor

Weight: Approximately 182 carats
Current Location: Iranian Crown Jewels.


16. Tiffany Yellow Diamond

Tiffany Yellow Diamond

Weight: 128.54 carats
Current Location: Tiffany & Co.


17. Taylor-Burton Diamond

Taylor-Burton Diamond

Weight: 69.42 carats

Purchased by Richard Burton for Elizabeth Taylor.


18. Dresden Green

Dresden Green Diamond

Weight: 41 carats
Current Location: Dresden Treasury, Germany

One of the world’s largest natural green diamonds.


19. Pink Star

Pink Star Diamond

Weight: 59.60 carats

World auction record holder among diamonds.

Sale Price: US$71.2 million.


20. Wittelsbach-Graff

Wittelsbach-Graff

Weight: 31.06 carats

Rare deep blue historic diamond.


21. Moussaieff Red

Moussaieff Red

Weight: 5.11 carats

Largest known red diamond.


22. Oppenheimer Blue

Oppenheimer Blue

Weight: 14.62 carats

One of the most valuable blue diamonds ever sold.


23. The Enigma

The Enigma diamond

The Enigma diamond

Weight: 555.55 carats

Largest faceted black diamond ever sold publicly.


24. Black Falcon

black falcon diamond

Weight: 612.34 carats
Polished By: Peter Herbosch

The largest cut black diamond known today.


The Most Valuable Diamonds Today

DiamondEstimated Value
Cullinan CollectionUS$2 billion+
Hope DiamondUS$250m to US$350m
Golden JubileeUS$100m to US$250m
CentenaryUS$100m+
Pink StarSold for US$71.2m
Lesedi La Rona RoughUS$53m sale
Oppenheimer BlueUS$57.5m sale
Koh-i-NoorPriceless

DCLA Commentary

The greatest diamonds are not always the largest. The Cullinan remains the most important diamond ever recovered because it transformed royal jewellery and demonstrated the highest standards of large diamond cutting. The Koh-i-Noor shaped centuries of political history, while the Hope Diamond became the world’s most famous coloured diamond.

From the Asscher family’s revolutionary work on the Cullinan in 1908 to Gabriel Tolkowsky’s masterpiece cutting of the Golden Jubilee, these extraordinary stones represent the pinnacle of both nature’s achievement and human craftsmanship. Together they form a unique record of diamond history and remain benchmarks for gemological excellence today.

DCLA Disclaimer: Diamond valuations shown are broad market estimates based on historical sales, insurance valuations, rarity and current market conditions. Many historically significant diamonds are considered priceless because they are held in national collections, museums or royal treasuries and would be unlikely ever to be offered for public sale.

Sotheby's Sells Jewels of "First Supermodel"

 1920's "supermodel" Phyllis Frank

Sotheby’s London is selling a private collection of rare Art Deco Cartier jewelry that once belonged to 1920’s “supermodel” Phyllis Frank (nee Francatelli).

She was an original model for The House of Lucile, the world’s first global couture brand and a groundbreaking British fashion house that was founded in 1894.

Francatelli (1892 – 1972) met and married New York financier, Jesse Frank, who showered her with Art Deco jewels that epitomized Cartier’s mastery of style and design throughout the Roaring 1920s and beyond.

Sotheby’s is offering seven lots, several featuring lapis lazuli, her favorite blue stone.

Highlight of her collection is a pair of diamond bracelets (pictured), circa 1925, millegrain-set with old brilliant-cut diamonds (estimate £ 20,000 to £ 40,000 (USD 27,000 to USD 54,000).

There’s also a diamond bow brooch, a sapphire and diamond bracelet and a lapis lazuli and diamond bracelet.

The House of Lucile, with salons in New York, Paris and Chicago, was founded by visionary British designer Lucy Christiana, also known as Lady Duff Gordon, who pioneered the modern catwalk and the concept of the fashion model.

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 cara...