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“Goose Bumps” on South Sea Pearl
A Review of HPHT Synthetic Diamonds Grown forJewelry Use
Colorless to Near-Colorless Diamonds, Emeralds from Pakistan, a History of European Royal Jewel Sales, and More…
Transparent Rhodonite with Clarity Enhancement
A clarity-enhanced rhodonite stuns with its exceptional size, transparency, and vivid color.
Quarterly Crystal: Diamond in Diamond
Examination of a South African diamond reveals an eye-visible diamond inclusion.
Cultured Pearl Update
Ruby in Diamond
Black Opal with Unique Play-of-Color
A black opal cabochon set in a ring displays vivid orange play-of-color.
The Characteristics and Identification of Filled Diamonds
Growth Method and Growth-Related Properties of a New Type of Russian Hydrothermal Synthetic Emerald
A new type of Russian hydrothermal synthetic emerald is produced by seeded growth in steel autoclaves without noble-metal inserts; the seed slices have been cut parallel to a face of the second-order hexagonal dipyramid s (1121).
Elements in Synthetic Overgrowth on Flux-Heated Ruby and Beryllium-Diffused Sapphire
Synthetic overgrowth caused by two different types of treatment are found on two samples in the Tokyo lab.
Morganite from Blue Star Gems
An extraordinary 236.27 ct morganite from Madagascar stands out at the GJX show.