What is a "stone"?

A stone is a piece of mineral matter that has been naturally formed in the earth's crust or created artificially in a laboratory. It can be found in a wide range of colors, shapes, and sizes, and has been used for various purposes throughout human history, including as a decorative element in jewelry. Stones used in jewelry making are often polished to enhance their natural beauty and may be cut in different shapes such as round, oval, pear, or square. They can be used in many different types of jewelry, including rings, earrings, necklaces, bracelets, and pendants, and are often associated with special meanings or symbolism, such as birthstones or anniversary stones.