Powellite 3.31 ct World Class Gem by Famous Gem Cutter Mr Luigi Mariani Y98599
Is a Calcium Molybdenite with formula: CaMoO4
Hardness is 3.5-4 . Is very popular among mineral collectors for its fluorescence, this gem here has been photograph with normal fluorescent daylight and then with short wave UV light.Excellent cut by Luigi Mariani, eye clean, a superb high quality rare gem, hard to find .
From Poona, India