Gemstone

The term gemstone encompasses a wide variety of natural materials used to make jewelry. Gemstones are divided in to precious, semi-precious, and common, with the most durable and rare stones falling into the precious category. The vast majority of gemstones are semi-precious or common. Agate, for example, is commonly found throughout the world. Natural rubies, particularly when found without inclusions, are very rare and are categorized as precious.

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