MALACHITE GEOLOGICAL INFORMATION:
Hardness: 3.5 to 5
Chemical Composition: Cu 2 CO 3 (OH) 2
Crystal System: Monoclinic Cu2CO3(OH)2
Color: Bright Green, Dark Green, Blackish Green
100% Satisfaction Guarantee on every purchase.
If you don't like it, simply return it to us, for no questions asked refund.