0.42 ct black opal 6x6x1.8mm$300.00 USD USD AUD Out of stock SKU: HT2131 Category: Black Opal Opal Specifications Additional information Weight 0.42 ct Dimensions 6 × 6 × 1.8 mm Body Tone Black N2 Brightness B3 Bright Cut Round Dome Medium Dome Opal Origin Lightning Ridge Predominant Colors Blue, Green Product Enquiry