3.4" Polished Rubellite (Tourmaline) & Quartz Sphere - Madagascar

This is a 3.4" wide, hand polished sphere made from pink tourmaline (rubellite) in quartz. This rock formation was collected from Madagascar. Comes with the pictured display stand.

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Schorl, or black tourmaline, is its most common form, and has been used for everything from jewelry to piezoelectric guitar pickups.

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.
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DETAILS
SPECIES
Tourmaline var. Rubellite & Quartz
LOCATION
Madagascar
SIZE
3.4" wide
CATEGORY
SUB CATEGORY
ITEM
#182224