"Adventurine: Adventurine belongs to the quartz family. The quartz
family is very large, with an enormous variety of gemstone material in
every color of the spectrum. Quartz is comprised primarily of silica
and is formed when silica-bearing solutions infiltrate porous rocks
and sediments. The silica then becomes impregnated into the porous
rock and changes the rock into what we call quartz. Adventurine is
green in color. "
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Office Box 999, Walker, MN 56484