18.29 ct boulder opal 36×12.6×3.8mm$50.00 USD USD AUD Out of stock SKU: GF230107 Category: Boulder Opal Opal Specifications Additional information Weight 18.29 ct Dimensions 36 × 12.6 × 3.8 mm Cut Freeform Opal Origin Yowah Predominant Colors Green Product Enquiry