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Ammolite: An Organic Jewel

Overview and commentary on the June 2013 Rock & Gem article, “Ammolite: An Organic Jewel.”

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Article Explains Ammolite’s Organic Origins and Feng Shui Popularity

Overview and commentary on the June 2013 Rock & Gem article, “Ammolite: An Organic Jewel.”

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Pearls: Nature's Sustainable Gem

Dr. Saleem Ali visited the Carlsbad, CA campus to present his research on pearls as a sustainable and renewable gem.

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A Useful Technique to Confirm the Hydrophane Nature of Opal

Observing a water drop’s interaction with opal, as well as refractive index, can confirm a specimen’s hydrophane nature with less risk of breakage than total immersion.

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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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Crystallographic Orientation of Biogenic Aragonite in Pearls

Explores the potential of laser Raman spectroscopy for material identification in pearls as well as determining the orientation of their biogenic mineral growth.

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Hong Kong Jewelry Show: The World’s Largest Assemblage of Cultured Pearls

A preview of the Hong Kong Jewelry Show, taking place Sept. 11–17.

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