0.68 ct gem black opal 6x5x2.5mmUS$800.00 Out of stock SKU: RL197 Category: Black Opal Opal Specifications Additional information Weight 0.68 ct Dimensions 6 × 5 × 2.5 mm Body Tone Black N4 Predominant Colors Orange, Red Brightness B4 Very Bright Cut Oval Dome Medium Dome Product Enquiry