![]() But in order for this to happen, they have to have decorative applications, such as lapis lazuli. To be classified as a gemstone, a mineral has to have economic and aesthetic value.Įven rocks can be defined as gemstones. Some well-known examples of gemstones are garnet, ruby, and emerald. Therefore, gems are some of the most precious minerals that are carefully selected to be cut, polished, and then used usually in jewelry making. However, a mineral should have both aesthetic and economic value to be classified as a gemstone. Crystalline gemstones are minerals with stable and definite atomic structures. ![]() Scientists classify some rocks or minerals as crystalline and amorphous gemstones.
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