Quartz, silicon dioxide, SiO2 is the second most abundant mineral in the earth's crust. Amethyst is a purple variety of quartz, often associated with basaltic rocks subalcaline, one of the most used gems to create jewelry, seals and intaglios.
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Details
Title: QUARTZ AND AMETHYST
Creator: Associazione Minatori per il Museo, Christian Mariotti
Date Created: 2014
Location: VETULONIA TIRLI
Publisher: Lucia Franceschelli
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