NGC Blog

Latest International Gem News for Collectors and Investors

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The 1.56 ct. “Argyle Phoenix” red diamond sold almost $4.2 million—more than double its estimated reserve.
May 24, 2024, 11:50 AM
This is a new auction record for a fancy red diamond in both total price and the $2.68 million price per carat price.
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On July 13, 2022, an oval 8.38 Burma ruby sold for $7.3 million or $871,000 per carat at Poly Auctions in Hong Kong.
Jul 24, 2022, 8:49 AM
Poly Auctions is relatively new Hong Kong auction house established in 2012. With this sale, they just jumped into the gemstone big leagues.
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Rio sells last of the Argyle diamonds
Aug 14, 2021, 1:24 PM
The 2021 Argyle diamond tender was comprised of 70 diamonds weighing 81.63 carats
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15.80 Internally Flawless Fancy Vivid Purple Pink Diamond sells at Christie's Hong Kong for only $29.3 million. It was expected to sell for $35 million.
May 25, 2021, 9:02 AM
An Asian private buyer purchased the stone named The Sakura, Japanese for cherry blossom, because the diamond is 'exactly' the same shade as the tree.  Perhaps the diamond was affected by weekend crashing crypto markets or simply fall out from Covid.
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Looking For A Large Burma ruby?
Apr 12, 2021, 8:37 AM
Sotheby's Magnificent Jewels has two with bidding starting on April 20, 2021 in Hong Kong.
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43.10 Kashmir Sapphire Sells for $6 million at Christie's
Dec 15, 2020, 11:14 AM
A bracelet/broach with 67.9 carats of Diamonds sells to Happy Winston.
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At Sotheby's October Hong Kong, a 6.41 "Pigeon Blood" Burma ruby sells for $2.8 million or over $432,000 per carat.
Oct 23, 2020, 8:08 AM
Ruby came with AGL report stating the color was 2.5 "Classic" Burma no heat and no clarity enhancement
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102-carat Diamond heads to Hong Kong auction
Sep 27, 2020, 9:50 AM
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