3.51 ct boulder opal 11.1×8.3×3.8mm$500.00 USD USD AUD Out of stock SKU: SB2307 Category: Boulder Opal Opal Specifications Additional information Weight 3.51 ct Dimensions 11.1 × 8.3 × 3.8 mm Brightness B3 Bright Cut Freeform Dome Low Dome Opal Origin Queensland Predominant Colors Blue Product Enquiry