Druzy means tiny quartz crystals that form within or on the surface of other stones. When the flowing ground water carrying dissolved silica is forced into the porous area of the rocks, rapid cooling often occurs causing the formation of tiny crystal on the surfaces or in cavities of the rocks. The clear crystal often forms on top of the previously deposited minerals. This is how druzy is formed. Some minerals found in this form are Chrysocolla, Malachite, Hematite, Pyrite, Carnelian and Cobalto Calcite.
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