is a gemstone
characterized as a transparent and crystalline variety
of quartz with a deep purple to blue-violet color. The colors are often intermingled in one stone, depending on the qualities
inherent in the stone
. Other hues include reddish-mauve, reddish-violet, and gray-mauve. It is often heated to lighten color.
Ref: 123978/2006-10-18Other Database Pages Exist for this Phrase:
Gemstone (Gemstone (Gem) is described as precious or ...)