15.83 ct gem boulder opal 19x17x6mmUS$15,000.00 Out of stock SKU: HR1501 Category: Boulder Opal Opal Specifications Additional information Weight 15.83 ct Dimensions 19 × 176 mm Body Tone Black N4 Predominant Colors Green, Orange Brightness B4 Very Bright Cut Freeform Dome Medium Dome Product Enquiry