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A Historic Turquoise Jewelry Set Containing Fossilized Dentine (Odontolite) and Glass

Michael S. Krzemnicki, Franz Herzog, Wei Zhou

A set of six antique brooches, set with diamonds and light blue cabochons, was investigated with microscopy, Raman analysis, and EDXRF spectroscopy. Most of the cabochons proved to be fossilized dentine, also known as odontolite (mineralogically, fluorapatite). The brooches also contained turquoise and artificial glass.