JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
Click here for our Evanston Store Hours
Thank you!
QUICK FACTS:
Location: Democratic Republic of Congo, Africa
Colors: green, blue, brown, and rarely yellow
Chemical Composition: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O(x < 1)
Hardness: 2½ - 3½
3 Items
Loading...