17.85 ct boulder opal 19.2×16.6×6.6mmUS$200.00 Out of stock SKU: GF230108 Category: Boulder Opal Opal Specifications Additional information Weight 17.85 ct Dimensions 19.2 × 16.6 × 6.6 mm Cut Freeform Dome Medium Dome Opal Origin Koroit Predominant Colors Green Product Enquiry