History of Diamond Grading in Australia

Blogs & News

Explore DCLA’s legacy as Australia’s leading diamond authority. Learn our history, meet the founders, and discover our unmatched grading expertise.

, including Catherine the Great's diamonds, and a Faberge necklace from the reign of Nicholas II, are to be offered
Unseen Imperial Russian Jewels for Sale

Rare Imperial Russian jewels, including Catherine the Great's diamonds, and a Faberge necklace from the reign of[…]

Cullinan Diamond and the Great Star of Africa
The 24 Most Important Diamonds in History

Size, History, Master Cutters and Present Locations Diamonds have fascinated humanity for centuries. Some became symbols of[…]

Art Deco Cartier jewelry that once belonged to 1920's "supermodel" Phyllis Frank
Sotheby’s Sells Jewels of “First Supermodel”

Sotheby’s London is selling a private collection of rare Art Deco Cartier jewelry that once belonged to[…]

cushion-shaped 32.20-carat fancy intense yellow diamond of VS2 clarity
Bonhams to Offer 32.20 Carat Fancy Intense Yellow Diamond in New York Auction

Bonhams to Offer 32.20 Carat Fancy Intense Yellow Diamond in New York Auction a cushion-shaped 32.20-carat fancy[…]

GIA Acquires 30% Stake in Tracr as Diamond Provenance Takes Centre Stage
GIA Acquires 30% Stake in Tracr as Diamond Provenance Takes Centre Stage

The global diamond industry has taken another significant step towards greater transparency and traceability, with the Gemological[…]

$25.6m Jadeite Necklace
$25.6m Jadeite Necklace Just Misses World Record

A green jadeite necklace sold for HKD 200.2 million ($25.6 million) at Christie's Hong Kong, narrowly missing[…]

A Harry Winston ring centering a cushion-cut, 7.08-carat Colombian emerald
30.20ct Fancy Intense Yellow Diamond to Headline Bonhams New York Auction

This ring features a cushion-cut, 8.23-carat, faint-pink, internally flawless diamond

What Determines Pearl Value Overall
Types of Pearls and Their Different Values

Pearls have fascinated jewellers and collectors for centuries, not only for their natural beauty but also for[…]

(left) the Azure Blue and (right) 5.04-carat fancy vivid blue.
DCLA News of the Day

Two Exceptional Blue Diamonds Headline Christie’s New York Auction

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