3.90 ct gem black opal 12.5x8x6mm$6,000.00 USD USD AUD In Stock 3.90 ct gem black opal 12.5x8x6mm quantity — OR — Add to cart SKU: UN193 Category: Black Opal Opal Specifications Additional information Weight 3.90 ct Dimensions 12.5 × 8 × 6 mm Body Tone Black N4 Predominant Colors Blue, Green Brightness B4 Very Bright Cut Oval Dome High Dome Opal Origin Lightning Ridge Product Enquiry