Lemurian Aquatine Calcite 8mm Round - 8-Inch Color_Gray Sardonyx is sometimes treated to

Sardonyx is sometimes treated to bring out its reddish tones

discovered a way to improve the quality of turquoise in the 1980's

A mixture of hydrocarbons

New Burma Jade is from a newly discovered deposit and closely resembles the top grade Jade from Burma

It was named from the Latin "Thule" - which was a term used by ancient Greeks and Romans to refer to the then-little-known lands to the north or present day Scandinavia

Lemurian Aquatine Calcite 8mm Round - 8-Inch Color_Gray Sardonyx is sometimes treated toCalcite is the one of the most common minerals. It occurs in a great variety of shapes and colors, and it constitutes a major portion of many of the earth's rocks.