Object: One cabochon cut gemstone in necklace
Weight: 21.040 gms (Gross) 
Dimensions: N/A
Shape and Cut: Fancy / Cab (1) 
Color: Black 
Refractive Index: 1.540 - 1.550 Biref 0.010 
Specific Gravity: N/A
Variety: Natural Balck Onyx (1) 
Species and Group: Quartz
Comment: Gold 15.560 gms, Black Onyx 27.40 cts