15.4 ct Aqua Blue Queensland Boulder Opal With Amazing Pattern, Twin UN-0159

This 15.4 CT Queensland boulder opal cabochon displays vivid aqua blue play-of-color with fluid movement across a natural ironstone seam, creating a captivating “rockpool” pattern that draws the eye in. Notably, this stone has a natural twin (Item UN-159), offering a rare opportunity for a matched pair or complementary design concept.