Quartz is a silicate mineral—composed of silicon and oxygen—that is in abundance within the Earth’s crust. It can be found naturally as lumps of the just the mineral itself, or it can be present in a number of rocks http://www.kaunited.com/quartz-stone/
Quartz is a silicate mineral—composed of silicon and oxygen—that is in abundance within the Earth’s crust. It can be found naturally as lumps of the just the mineral itself, or it can be present in a number of rocks http://www.kaunited.com/quartz-stone/
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