This Natural Stingray Coral Loose Gemstone is a stunning black radiant cabochon with a weight of 16.5 carats. The gemstone has excellent cut grade and is polished to a smooth finish. Its opaque transparency and eye-clean clarity make it a desirable choice for jewelry and gemstone enthusiasts. With its origin from India, this unique gemstone is perfect for those looking for a natural and high-quality addition to their collection.