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FANCY COLOR DIAMOND
Dazzling brilliance. Captivating color. The planet’s most valued gems are fancy color diamonds.
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Update on Mozambique Ruby Mining and Trading
Current activity and production at various sites around Mozambique are reported.
Christmas Tree–Shaped Internal Feature In Diamond
A laser manufacturing remnant in a Fancy yellow diamond creates a unique specimen.
Geology and Development of the Lomonosov Deposit, Northwestern Russia
Reviews diamond discoveries at the Lomonosov deposit, as well as the geology of the Arkhangelsk kimberlite province.
New Designs from Paula Crevoshay
World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.
Two Large CVD-Grown Synthetic Diamonds Tested by GIA
Two near-colorless rounds, weighing 3.23 and 2.51 ct, were the largest CVD-grown synthetic diamonds GIA has examined.
Unusual Graining Structure in Pink Diamond
A Very Light pink diamond showing a uniform plane of color intersecting with a cone of strain that fit perfectly into a colorless hole is studied at the Carlsbad lab.
Digital Photomicrography for Gemologists
A guide to capturing gem inclusion scenes using practical equipment and techniques and the appropriate image-refining software.
Gemstones and Jewelry Inspired By Nature
At AGTA, exquisite jewelry pieces inspired by natural scenes were on view.
Record Prices at Gem Auctions
Auction price records were broken in late 2014 as ultra-wealthy buyers vied for rare, important gemstones.
CVD Synthetic Diamond with Fancy Vivid Orange Color
Strong absorptions from N-V centers were the main cause of a CVD synthetic diamond’s pinkish orange bodycolor.
Xenotime Inclusion in Yellow Diamond
Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.
Heavily Irradiated CVD Synthetic Diamond
A look at the first CVD synthetic diamond examined at GIA that has been irradiated to a blue color.
