Learn about Quartz
a versatile mineral with clear, milky, and colored varieties; crystal forms, formation clues, and tips for identifying amethyst and citrine.Quartz from Cavradi Gorge, Switzerland
Cavradi Gorge quartz, Switzerland - clear, glassy crystals with hematite and red rutile on gneiss, a famed Alpine locality prized by serious collectors.Cavradi gorge
A collector's guide to Cavradi gorge, Switzerland: its geology, mining history and notable minerals, illustrated with the 135 specimens documented from this locality on EarthWonders.
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