Image 1 of 1 Opal Boulder 29.10 ct $300.00 31.8 x 13.5mm Add To Cart Added! 31.8 x 13.5mm You Might Also Like Onyx Drusy $450.00 Blue Chalcedony Drops 12.11 ct $475.00 Opal Ethiopian 4.61 ct $697.00 Pyrite on Slate Square Pair 3 $300.00 Agate Luna Trio $500.00