3.2" Polished Chevron Amethyst Sphere - Morocco

This is a gorgeous, 3.2" wide, polished sphere made from chevron/banded amethyst from Morocco. Comes with the pictured display stand.

Chevron amethyst, also frequently marketed under the names dream amethyst or banded amethyst is a combination of amethyst and white quartz in a banded and often v-shaped pattern. It is found in large veins in rock (not individual amethyst crystals) and often tumbled or polished.

Amethyst is a purple variety of quartz (SiO2) that owes its violet color to natural gamma irradiation, iron impurities, and the presence of trace elements, which result in complex crystal lattice substitutions. It is considered a semi-precious gemstone, and just two centuries ago was considered to have a value on par with diamonds, sapphires, and rubies. The largest and best known amethyst deposits occur in southern Brazil and Uruguay, where they are found in hydrothermally-formed geodes, but many localities around the world produce an amazing variety of amethyst crystals and formations. They are almost always formed in medium- to high-temperature geological settings.

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
Quartz var. Amethyst
LOCATION
Morocco
SIZE
3.2" wide
ITEM
#157618