3.87 ct boulder opal 18.6×7.8x3mmUS$200.00 In Stock 3.87 ct boulder opal 18.6x7.8x3mm quantity Add to cart SKU: GF230106 Category: Boulder Opal Opal Specifications Additional information Weight 3.87 ct Dimensions 18.6 × 7.8 × 3 mm Cut Drop Dome Low Dome Opal Origin Winton Predominant Colors Green Brightness B2 Moderately Bright Product Enquiry