The product is a pair of 16.80 carat Spiny Oyster Copper Turquoise cabochon loose treated gemstones. These gemstones are opaque, blue in color, and cushion-shaped. They are sourced from South Africa and treated for enhanced clarity. The gemstones are polished and have excellent cut quality, making them suitable for jewelry and watch-making purposes. With a total carat weight of 16.80, these gemstones are of high quality and can add a beautiful touch to any jewelry piece.