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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
There are a variety of characteristics of minerals. Some of these  include solid, inorganic, naturally occurring, definite chemical  composition, and definite crystalline st â¦ ructure. 2. Second, minerals are inorganic and solid   3. Third, Ever â¦ y mineral is an element or compound with a definite  chemical composition   4. Fourth, minerals are crystalline solids.