A 586.43 ct cat’s-eye aquamarine is donated to the Smithsonian National Museum of Natural History.
Read MoreA review of the history of this area, its geology, and the mining methods that have predominated.
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Follow these tips to pick out the perfect engagement ring for the love of your life.
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Explore the wondrous world of diamonds in this large book (33 pounds and three feet wide when open) – and gallery from a past exhibit – that reveals their detail and beauty.
Read MoreAn unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.
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Two near-colorless rounds, weighing 3.23 and 2.51 ct, were the largest CVD-grown synthetic diamonds GIA has examined.
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Results from GIA’s recent testing of a 10.08 ct blue HPHT synthetic diamond, the largest HPHT synthetic recorded to date.
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Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.
Read MoreExamines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.
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Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.
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