2.56 ct gem black opal 11.9×8.2×4.5mm$10,000.00 USD USD AUD Out of stock SKU: A22M03 Category: Black Opal Opal Specifications Additional information Weight 2.56 ct Dimensions 11.9 × 8.2 × 4.5 mm Body Tone Black N3 Brightness B4 Very Bright Cut Freeform Dome High Dome Opal Origin Lightning Ridge Predominant Colors Red, Gold Product Enquiry