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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
Olivine always has silicon and oxygen as well as iron or magnesium or both, (Mg, Fe)2SiO4. The physical properties of minerals include: How physical properties are used to identify minerals is described in the lesson on Mineral Formation. Mineralogists divide minerals into groups based on chemical composition. mineral is formed through natural processes and has a definite chemical composition. Minerals can be identified by their characteristic physical properties such as crystalline structure, hardness, density, flammability, and color. Minerals are crystalline solids.