0.28 ct black opal 4.5×3.1×2.5mmUS$300.00 Out of stock SKU: B22A07 Category: Black Opal Opal Specifications Additional information Weight 0.28 ct Dimensions 4.5 × 3.1 × 2.5 mm Body Tone Black N3 Brightness B3 Bright Cut Cushion Dome Medium Dome Opal Origin Lightning Ridge Predominant Colors Green Product Enquiry