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An Examination of Four Important Gems

Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.

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Gemstone Carving in China: Winds of Change

Chinese master carvers have produced some of the world's most sophisticated gemstone carvings.

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The Pearl in the Chicken: Pearl Recipes in Papyrus Holmiensis

Several pearl-in-chicken cleaning experiments are carried out to test the validity of recipes from an ancient Egyptian source.

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Padparadscha: What's in a Name?

An examination of the term used to describe a sapphire the color of a lotus blossom.

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Jade Forms from Ancient China

This article briefly examines some of the symbols used in jade carved in China.

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Lapis-Lazuli from Sar-E-Sang, Badakhshan, Afghanistan

apis-lazuli is an ornamental stone (figure 1) that has been found in the artifacts of some of the oldest known civilizations.

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Harry Winston: A Story Told in Diamonds

An overview of some of the most fabulous and famous diamonds that Harry Winston has known.

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An Important Exhibition of Seven Rare Gem Diamonds

The stories behind seven strikingly beautiful rare natural diamonds, united in an exhibit at the Smithsonian, are told here.

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Star of the South: A Historic 128 Ct Diamond

This article presents the first complete gemological characterization of the historic 128.48 ct Brazilian diamond known as the Star of the South.

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Fingerprinting of Two Diamonds Cut from the Same Rough

With the information from a combination of tools now available, the sophisticated gemologist can fingerprint a given stone.

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