Monday, June 3, 2019
Minerals Defination
Minerals are substances that are formed naturally in the Earth. Minerals are usually solid, inorganic, have a crystal structure, and form naturally by geological processes. The study of minerals is called mineralogy. A mineral can be made of single chemical element or more usually a compound.
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DURABILITY OF GEMS MATERIALS DURABILITY is combination of three parameters. HARDNESS: Resistance to Scratching TOUGHNESS: ... -
Unit Of Weight * Gems Are Mearured In Carat * It Is Denoted By (CT) The Name Of Carat Is Derived By Carob Three. Each Can't Is Sp...
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