11.81 ct gem black opal 20x17x5mmUS$8,500.00 Out of stock SKU: DG1701 Category: Black Opal Opal Specifications Additional information Weight 11.84 ct Dimensions 20 × 17.8 × 5 mm Body Tone Black N4 Predominant Colors Green, Orange Brightness B3 Bright Cut Dome Medium Dome Product Enquiry