7.21 ct black opal 16x12x6mm$3,500.00 USD USD AUD Out of stock SKU: T1600361 Category: Black Opal Opal Specifications Additional information Weight 7.21 ct Dimensions 16 × 12 × 6 mm Body Tone Black N2 Predominant Colors Blue, Green Brightness Bright B3 Cut Oval Dome Medium Dome Opal Origin Lightning Ridge Product Enquiry