4.51 ct gem black opal 16x10x4mmUS$6,000.00 USD USD AUD In Stock 4.51 ct gem black opal 16x10x4mm quantity Add to cart SKU: 18DYZ Category: Black Opal Opal Specifications Additional information Weight 4.51 ct Dimensions 16 × 10 × 4 mm Body Tone Black N4 Brightness B5 Vivid Cut Oval Dome Medium Dome Predominant Colors Green Opal Origin Lightning Ridge Product Enquiry