0.51 ct boulder opal 8.7x5x1.7mm$400.00 USD USD AUD Out of stock SKU: TG2326 Category: Boulder Opal Opal Specifications Additional information Weight 0.51 ct Dimensions 8.7 × 5 × 1.7 mm Brightness B3 Bright Cut Freeform Dome Low Dome Opal Origin Queensland Predominant Colors Green Product Enquiry