モゴックのBaw Mar鉱山産ブルーサファイア (英語)

Reports on the microscopic, chemical, and spectroscopic features that differentiate the high-quality Baw Mar sapphire from “classic” gem-quality Burmese sapphire.

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Recent Advances in Understanding the Geology of Diamonds

Examines the last two decades’ advances in analyzing and understanding the formation of natural diamonds, and their relation to the earth’s formation.

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Gemological Characteristics of Coated Jadeite Jade

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ベトナムのLuc Yen(リュック エン)の宝石採鉱に関する最新情報 (英語)

Explores the emergence of the Luc Yen area as a producer of corundum, spinel, tourmaline, and other colored stones.

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Titanium-Bearing Synthetic Alexandrite and Chrysoberyl

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Looking Ahead to 2014

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Books: Fashion Jewellery: Made In Italy

In piecing together this treasure trove of signature Italian style, the book brings readers closer to understanding the appeal and artistry of jewelry making beyond that which is traditionally associated with fine jewelry.

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Stellate Zircon Inclusions in Vivid Purple-Pink Morganite

Zircon clusters and other inclusions help to create an unusual vivid purple-pink morganite specimen.

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Composite Amber with an Unusual Structure

This 9.12 gram amber composite featured a combination of natural and imitation amber, accompanied by natural and artificial insect inclusions.

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“Gran Dama” Brooch Featuring Large Melo Pearl

The centerpiece of this brooch is a 98.67 ct Melo pearl, believed to be one of the world's largest.

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Demantoid Garnet Fossil Pseudomorphs

In these two extremely rare specimens, demantoid garnet replaced coral and gastropod fossils.

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Demantoid Garnet Fossil Pseudomorphs

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