Cactus quartz, South Africa
Gem Silica & Azurite w/Malachite
Bouquet agate |
Azurite Malachite - Azurite is one of the two basic copper carbonate minerals, the other being bright green malachite. http://en.wikipedia.org/wiki/Azurite
Tourmaline from Shanghai Mineral show.
Another angle of this 801 carat Boulder Opal shows the blues that come out under different light....Bill Kasso