Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.Avessalos, Serifos
Avessalos, Serifos, Greece — a defining Fe-skarn locality noted for prase-dominant green quartz, bi-colored prase–amethyst crystals, and iron-rose hematite ros…
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