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In addition, it must be hard and durable. Its value increases if it is also rare.The beauty of a gem is measured in terms of its clarity, brilliance, and color. Comments
Snow passes all of the requirements necessary to be defined as a mineral. In Review. A mineral, by definition, is. . . 1  Inorganic, which means that it is not made by a living organism. 2  A solid.3  Has a regular crystal structure. 4  Made by nature which means minerals are not made, directly or indirectly, from human activity. 5  Has a predictable chemical formula.now passes all of the requirements necessary to be defined as a mineral. In Review. A mineral, by definition, is. . . 1  Inorganic, which means that it is not made by a living organism. 2  A solid.