How Will You Describe Quartz?
How Will You Describe Quartz? Quartz, the commonest of all minerals, is made of silica. It is found in most kinds of rocks in colorless, often transparent form. There...
Read MoreHow Will You Describe Quartz? Quartz, the commonest of all minerals, is made of silica. It is found in most kinds of rocks in colorless, often transparent form. There...
Read MoreWhat Gives Opals Their Colors? The beautiful flashes of color given off by a precious opal as it is turned and viewed from different angles are caused by the various...
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