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Olive-green serpentine cabochon.
Serpentine Cabochon with Unusual Olive Green Color

A green cabochon from China resembling jadeite is found to be antigorite, a member of the serpentine group.

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Rock crystal coated with brown skin.
Coated Rock Crystal Imitation of Ruby

A coated rough rock crystal resembles a purplish red ruby.

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Synthetic cubic zirconia imitation of peridot.
Color-Change Synthetic Cubic Zirconia as Peridot Imitation

A greenish yellow material set in a ring as a peridot imitation is identified as synthetic cubic zirconia.

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Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewelry Design and the Latest in Synthetics

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

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Silver brooch with glass
Moldavites: Natural Or Fake?

A gemological investigation into natural moldavite and its more recent imitations.

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Dyed green marble imitating jadeite
Dyed Green Marble Imitating Jadeite

What appeared to be high-quality jadeite was actually dyed green marble with calcite as the main mineral.

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Dyed marble imitation of purple sugilite
Dyed Marble as a Purple Sugilite Imitation

Investigation of a purple bangle identified it as a dyed marble imitation of sugilite.

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Unique by Design
Books: Unique by Design: Contemporary Jewelry in the Donna Schneier Collection

Review of Suzanne Ramljak's Unique by Design: Contemporary Jewelry in the Donna Schneier Collection.

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The Art of Bulgari: La Dolce Vita and Beyond
Books: The Art of Bulgari: La Dolce Vita and Beyond, 1950–1990

Review of Martin Chapman and Amanda Triossi’s The Art of Bulgari: La Dolce Vita and Beyond, 1950–1990.

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Ruby & Sapphire: A Collector’s Guide
Books: Ruby & Sapphire: A Collector’s Guide

Review of Richard Hughes’s Ruby & Sapphire: A Collector’s Guide.

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