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5.19 ct CVD synthetic diamond
CVD Synthetic Diamond Over 5 Carats Identified by GIA

Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.

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10.08 ct HPHT synthetic diamond with color equivalent to Fancy Deep blue
Blue HPHT Synthetic Diamond Over 10 Carats

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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2.51 and 3.23 ct CVD synthetic diamonds
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.

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Very Large Rough Diamond

A report on a 1,138 ct rough diamond, possibly the largest ever examined by GIA.

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Large Pinkish Brown CVD Synthetic Diamond

Report on the analysis of an unusually large CVD synthetic diamond, unique in that its Faint to Light pinkish brown color doesn’t appear to be the result of post-growth treatment.

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Enormous South Sea Cultured Pearl Filled with Cultured Pearls

An unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.

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