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Winter 2007, Volume 43, Issue 4

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Lab Notes


Apatite in spessartine

Atypical photoluminescence feature in a colorless type IIa diamond

Diamond inclusions fit a holiday season 

Diamond with large etch channels filled with iron sulfides

Natural black diamond with oriented etch channel

The pareidolia of diamonds

A notable emerald carving

Gold coated onyx

Sapphire with a double star

Impregnated glass imitation of turquoise

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