1.80 ct very rare genuine black opal gemstone

Product No: 1611opa0029
Stone Type: Natural Opal
Shape: Triangle
Total weight: 1.80 carats
Size (mm): 13.6x7.6x3.2mm
Color: Rainbow See Image
Clarity: Semi Transparent
Luster: Very Good
Hardness: 5.5-6
Treatment: Natural/Untreated
Origin: Australia