15.2" Huge, Natural Quartz Point With Metal Stand

This is a gorgeous quartz crystal from Minas Gerais, Brazil. Two of the upper facets have been polished, while the rest of the specimen has been left in its natural state. It is accompanied by the pictured custom metal display stand.

Measurements:
Length of crystal - 15.2"
widest point at base - 6.5"
Height on metal stand - 16.3"

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.
FOR SALE
$1,450
DETAILS
SPECIES
Quartz
LOCATION
Minas Gerais, Brazil
SIZE
Crystal length: 15.2", Width at base: 6.5", Height on metal stand: 16.3"
CATEGORY
SUB CATEGORY
ITEM
#206907