Ophir Gem Collection Achieves Nine Guinness World Records

ophir sapphireNine gems from the Ophir Collection of Impressively Large and Unusual Gem Specimens have been recognized by Guinness World Records for being the largest faceted gemstones in their class. The most valuable of the nine include a 31,308-carat oval blue sapphire, a 5,905-carat brown sapphire, and a 508.06-carat tanzanite.

The Delaware, New Jersey based collection also boasts record holders of a 65.22-carat serendibite, (more…)

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Rare Red Diamond Leads Christie’s December Auction

Red DiamondJust in time for the holiday season, Christie’s is headlined their Magnificent Jewels sale on December 10th with red and green colors. Everyone’s eyes will be on a 3.15 carat round brilliant fancy reddish orange diamond, estimated at $700,000 – $1.2 million.

True red diamonds are the crème de la crème of diamonds – the least naturally occurring color, which means it demands a very high premium. (more…)

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Alexandrite at Auction

AlexandriteA 15.35 carat rare alexandrite displaying chameleon-like qualities makes the headlines at Government Auction’s April 29th showcase, among the 1,200 lots of fine jewelry, cars and art.

What is alexandrite? One of the lesser known and underrated gemstones in the market, its unique quality is its color-shifting. In natural daylight, the gemstone appears bright green, but in normal indoor lighting it (more…)

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Making The Grade

How do we determine the price of a colored diamond? Who makes the classifications between light and fancy? Naturally occurring colored diamonds are rare; fancy colored diamonds are even rarer. It is estimated that only 2% of total rough diamond production yields a fancy color, any color really, including pink, green and yellow.

GIA Color GradingDevelopment of the color grading system began in the 1950’s, when the (more…)

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Glow In The Dark Diamonds

Diamond Ultraviolet LightEver step under a black light? Your teeth, eyes, white clothes and even your diamonds can glow! Diamond fluorescence is the visible light some diamonds release while being exposed to ultraviolet (UV) rays. According to the Gemological Institute of America (GIA), fluorescence refers to the intensity or strength of the diamonds reaction to the UV rays.

Diamonds which possess fluorescence are in fact (more…)

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