Natural Black Opal gold plated-Sterling Silver Ring. Offered is an elegant sterling silver ring set with a beautiful natural black opal displaying vivid flashes of green, red, orange, and yellow. The gemstone's exceptional play-of-color makes this a distinctive piece for collectors and jewelry enthusiasts. Specifications - Gemstone: Natural Black Opal - Stone Weight: 4.10 ct - Metal: Sterling Silver (925) - Total Ring Weight: 2.70 g - Cut: Oval Cabochon - Condition: unused - Treatment: smoked - Origin: Ethiopian opal Shipping - Secure, protective packaging - Tracked shipping - Estimated delivery: 13–15 business days, depending on destination and customs clearance A beautiful natural black opal ring with vibrant color play, ready to wear or add to a collection. play.