3.67 ct black opal 12.9x10x3.8mmUS$700.00 Out of stock SKU: BCO2257 Category: Black Opal Opal Specifications Additional information Weight 3.67 ct Dimensions 12.9 × 10 × 3.8 mm Body Tone Black N1 Brightness B4 Very Bright Cut Oval Dome Medium Dome Opal Origin Lightning Ridge Predominant Colors Purple, Blue Product Enquiry