1.67 ct boulder opal 13.5×6.5×2.4mm$600.00 USD USD AUD Out of stock SKU: HK2304 Category: Boulder Opal Opal Specifications Additional information Weight 1.67 ct Dimensions 13.5 × 6.5 × 2.4 mm Brightness B3 Bright Cut Drop Dome Low Dome Opal Origin Queensland Predominant Colors Blue, Green Product Enquiry