Crystals & Stones

Gem silica, chalcedony over chrysocolla from Arizona; photo by Robert M. Lavinsky, CC BY-SA 3.0 — Roosters Peacock crystal guide
Gem Silica: The Stone of Clear Expression, Calm & Creative Insight
Gem Silica is a gem trade name for translucent blue-to-blue-green chalcedony colored by Chrysocolla rather than a separate mineral species. Explore its mineral science, trade-name and identification caveats, modern symbolic... Read more...