Sunday, June 7, 2015

Amethyst is purple quartz, which is silicon dioxide. The color may derive from manganese or ferric thiocyanate. Amethyst

52f28ee41ec974f70843cad2d09457f4
Amethyst is purple quartz, which is silicon dioxide. The color may derive from manganese or ferric thiocyanate.
Posted by at
Labels:

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)