Genuine Kingman turquoise, Spiney oyster shell in orange and purple with sterling silver in a beautiful necklace. It is approximately 17” long. Natural Gemstones are minerals or organic matters that are produced from nature. They can be cut and polished for use as jewelry or other adornments. Most Gemstones are hard, durable and rare with great aesthetic value, including natural gemstones, natural jades and natural organic materials (such as pearl and amber).