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Fake green rough diamond
GIA Exposes Rough Diamond with Fake Green Color
Manufacturers coated a rough diamond with a green substanceto imitate a natural color, the Gemological Institute of America (GIA) saidafter the stone turned up for grading.The presence of chromium oxide powder on the surface ofthe 6.49-carat crystal...
Rough Markets Aug 19, 2019 Rapaport News
Rio Tinto Argyle pink tender 2019
Rio Tinto Unveils Roster of Pink Diamonds
Rio Tinto has launched what’s likely to be one of its lastannual pink-diamond tenders, as the company gears up to close its flagshipArgyle mine.The Argyle Pink Diamonds Tender, which has run since 1984,comprises rare polished colored...
Polished Markets Jul 14, 2019 Rapaport News
GIA
GIA Offers Origin Reports for Colored Diamonds
The Gemological Institute of America (GIA) will offer provenance reports for colored diamonds, expanding its existing service matching polished to the original rough. The organization analyzes the physical measurements andother scientific data...
Polished Markets Jun 02, 2019 Rapaport News
Sotheby's pink Geneva Nov 2018
Colored Diamonds Lead $60M Sotheby’s Sale
Sotheby’s garnered $59.9 million at its Geneva auction lastweek as a 21.19-carat pink diamond smashed its estimate with a final price of $7.4million. The cushion-shaped, fancy-light-pink, VVS2-clarity, type IIadiamond fetched $347,601 per carat, Sotheby’s reported...
Polished Markets Nov 18, 2018 Rapaport News
Fancy Color
Prices Rise for Pink and Blue Diamonds
Pink and blue fancy-color diamonds saw price increases inthe third quarter, while yellows dipped, according to the Fancy Color ResearchFoundation (FCRF).The organization’s Fancy Color Diamond Index for pinks grew0.4% versus the...
Polished Markets Nov 01, 2018 Rapaport News
Juliet pink diamond
Dealer Holding $30M Diamond ‘Hostage,’ Lawsuit Says
New York-based Global Diamond Group has refused to return a 30-carat pink diamond in an attempt to force the stone’s majority owner into a buyoutdeal, according to a lawsuit.Global, which has the diamond on memo, held the stone“hostage” so that...
Financial-Legal Jun 18, 2018 Rapaport News
Sothebys 150 120617
Blue Diamond Sells for $15M at Sotheby’s New York
Sotheby’s sold $54 million worth of jewelry at its New Yorkauction on Tuesday as several pieces containing rare blue diamonds andgemstones yielded higher-than-expected prices.An anonymous buyer spent $15.1 million, or $2.7 million percarat, on an emerald-cut, 5.69-carat,...
Polished Markets Dec 06, 2017 Rapaport News
Pink Promise
Christie’s Hong Kong Sells Pink Diamond for $32M
A pink diamond ring fetched $32 million (HKD 250 million) at a Christie’s auction in Hong Kong, less than two weeks afterSotheby’s failed to sell another diamond of the same color. The oval-shaped, 14.93-carat, fancy-vivid pink,...
Polished Markets Nov 29, 2017 Rapaport News
Yellow diamonds Bonhams Nov 2017
Historic Yellow Diamonds Up for Auction
Five storied fancy vivid yellow diamonds with a historicalconnection to the Cullinan family will go under the hammer in London next month.Three of the diamonds, which are step-cut and weigh 5.29carats, 3.11 carats and 2.37...
Polished Markets Nov 20, 2017 Rapaport News
Petra 26ct Blue Jan 2014
Blue Diamond Scarcity Drives Price Rise
Blue diamond prices climbed in the third quarter due tolower supply, according to the Fancy Color Research Foundation (FCRF).The price of fancy blue diamonds grew 4.7% year on year in the three months ending September...
Retail Nov 07, 2017 Rapaport News
Christie's Pink Promise
Christie’s Expects Up to $42M for Pink Diamond
A fancy vivid pink diamond will officially be the mostexpensive piece of jewelry Christie’s Hong Kong has ever auctioned when it goesunder the hammer at the Magnificent Jewels sale this month.The 14.93-carat, VVS1-clarity, type IIa...
Polished Markets Nov 01, 2017 Rapaport News
Kimberley Red Argyle
Red Argyle Diamond to Appear at Taiwan Show
A rare, fancy red diamond from the Argyle mine in Australiawill go on display at the Taiwan Jewellery & Gem Fair later this week.Taiwan-based Jurassic Inc. will showcase the 1-carat Kimberley Red diamond at the exhibition,...
Polished Markets Oct 30, 2017 Rapaport News
Alrosa 37ct yellow
Alrosa Finds 34ct. Yellow Diamond
Alrosa has recovereda 34.17-carat fancy vivid yellow rough diamond in northeastern Russia, the miner’slargest fancy-colored stone this year.The diamond,found by Alrosa affiliate Almazy Anabara at its Ebelyakhalluvial mining deposit in the remote region of Yakutia,...
Mining Oct 22, 2017 Rapaport News
Sothebys fancy deep blue diamond HK Sept 2017
Blue Diamond to Shine at Sotheby’s Hong Kong
A rare blue diamond ring will lead Sotheby’s Magnificent Jewels& Jadeite auction in Hong Kong on Tuesday, estimated at $7 million (HKD 55million) to $9.6 million.The pear-shaped, 5.14-carat, fancy deep blue, SI1-clarity diamond, is mounted on an 18-caratwhite gold...
Polished Markets Oct 01, 2017 Rapaport News
Bonhams 10.28 ct Marquise
Jewelry Overtakes Cars as Investment Prospect
Jewelry has zoomed ahead of cars in Knight Frank’s LuxuryInvestment Index, as appetite for modern pieces has accelerated.Jewelry prices rose 4% in the 12 months to June 30, thereal-estate firm said in a recent research report, based mainly on data...
Research Sep 27, 2017 Rapaport News
Barbara Wheat AIGS
Colored-Diamond Group Expands into Asia
The Natural Color Diamond Association (NCDIA) has formed anaffiliation with an Asian gemological organization in an attempt to extend itssupport and educational services to the region.The trade body will establish NCDIA Asia by partnering withthe Asian...
Polished Markets Sep 25, 2017 Rapaport News
Alrosa pink Sept 2017
Alrosa Expects Big Pay Day from Pink Diamond
Alrosa has recovered the largest pink rough diamond in itshistory, and said it could fetch a record selling price for the Russian miner.Alrosa’s United Selling Organization (USO) and polishingdivision Diamonds Alrosa are examining...
Mining Sep 24, 2017 Rapaport News
Bonhams 4.03ct. blue diamond
Bonhams to Auction 4.03ct. Blue Diamond
A fancy intense blue diamond will lead Bonhams’ Londonauction next month, with the company estimating it could fetch close to $2million. The pear-shaped, 4.03-carat stone has been in a UK privatecollection for more than 30 years, Bonhams...
Polished Markets Aug 21, 2017 Rapaport News
Merlin pink diamond
Merlin Finds Two Pink Diamonds in Australia
Merlin Diamonds recovered two pink diamonds at its mine inAustralia’s Northern Territory, the company said Monday.While extremely small at 0.039 carats and 0.025 carats, therough stones indicate the possibility of finding further pink...
Mining Jul 03, 2017 Rapaport News
Blue Moon
FCRF: Supply Shortages Lift Blue Diamond Prices
Blue diamonds outperformed the rest of the fancy-colormarket in the first quarter, as high demand for the rare stones continued todrive prices, according to the Fancy Color Research Foundation (FCRF).The price index for blue...
Polished Markets Apr 26, 2017 Rapaport News
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