3.80 ct Free-Form Black Opal

Opal type: Black opal
Colors: Green, turquoise, blue
Weight: 3.80 carats
Dimensions: 20 x 6.40 x 4.45 mm
Shape: Free-form
Cut: Cabochon
Body tone: N2
Treatment: None
Origin: Lightning Ridge, Australia
 
Gemstone enhancement disclosure information:
All gemstones are natural and untreated (N), unless otherwise indicated.
N - Natural/Untreated • ASSBL - Assembled