7.79 ct boulder opal 17.8×14.2×4.5mm$1,200.00 USD USD AUD Out of stock SKU: OT2308 Category: Boulder Opal Opal Specifications Additional information Weight 7.79 ct Dimensions 17.8 × 14.2 × 4.5 mm Brightness B3 Bright Cut Triangle Dome Low Dome Opal Origin Queensland Predominant Colors Green Product Enquiry