Black Opal Cabochon $25,000.00 4.92 carats. 17.47 x 11.00 x 4.45 mmEthiopia w/ no treatment. GIA Certified black opal. Shop › Black Opal Cabochon Add To Cart Added! 4.92 carats. 17.47 x 11.00 x 4.45 mmEthiopia w/ no treatment. GIA Certified black opal.
