3.70 ct gem black opal 9.5x12x4.5mm$5,000.00 USD USD AUD Out of stock SKU: LS1606 Category: Black Opal Opal Specifications Additional information Weight 3.70 ct Dimensions 9.5 × 12 × 4.5 mm Body Tone Black N3 Predominant Colors Blue, Green Brightness B5 Vivid Cut Freeform Dome Low Dome Opal Origin Lightning Ridge Product Enquiry