4.75 ct gem black opal 11.8×11.3×4.7mm$30,000.00 USD USD AUD In Stock 4.75 ct gem black opal 11.8x11.3x4.7mm quantity — OR — Add to cart SKU: JR2507 Category: Black Opal Opal Specifications Additional information Weight 4.75 ct Dimensions 11.8 × 11.3 × 4.7 mm Body Tone Black N3 Brightness Very Bright B4 Cut Cushion Dome Low Dome Opal Origin Lightning Ridge Predominant Colors Blue, Gold Product Enquiry