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This Specimen has been sold.
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6.4" Polished Quartz Geode WIth Amethyst Band On Metal Base
This is a gorgeous nodule portion of quartz and amethyst from Brazil. It has been cut and polished on one face to highlight the beauty of the piece. An overall interesting specimen.
This nodule sits snuggly on a custom metal display stand that is removable, but ill advised.
This nodule sits snuggly on a custom metal display stand that is removable, but ill advised.
About Quartz
Quartz is the name given to silicon dioxide (SiO2) and is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich environments--usually igneous rocks or hydrothermal environments like geothermal waters--at temperatures between 100°C and 450°C, and usually under very high pressure. In either case, crystals will precipitate as temperatures cool, just as ice gradually forms when water freezes. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountain formation: these veins can be hundreds of millions of years old.
Quartz is the name given to silicon dioxide (SiO2) and is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich environments--usually igneous rocks or hydrothermal environments like geothermal waters--at temperatures between 100°C and 450°C, and usually under very high pressure. In either case, crystals will precipitate as temperatures cool, just as ice gradually forms when water freezes. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountain formation: these veins can be hundreds of millions of years old.
SPECIES
Quartz
LOCATION
Brazil
SIZE
6.4 x 5.17" (without base), about 2.5" thick, 8.5" tall on stand
CATEGORY
ITEM
#207041
