Certified Natural Amethyst AAA Quality 11 mm Faceted Cushion 1 pc loose gemstone From Dashrath International india
Name :- Amethyst
Clarity :- Transparent
Hardness :- 7
Amethyst is the most precious quartz mineral and comes in a few distinct colors including violet, purple, rose, lavender and mauve. When it comes to value, the most valuable color is that of a deep purple with tinges of violet.
Mohs scale hardness 7
Heat treatment between 878 - 1382 degrees F (470 - 750 degrees C) produces light yellow, red-brown, green, or colorless varieties. The original color an be restored by X-ray radiation. - Gemstones of the world, Walter Schumann, 2001, p 118
Significant Gem Localities:- Amethyst can be found in many parts of the world; Brazil, Uruguay, Madagascar Germany, Russia. other place :- Afghanistan, Bolivia, Cambodia, Canada, India, Kenya, Mexico, Namibia, Nigeria, Peru, South Korea, Sri Lanka, Uruguay, USA