Two Crystals Of Natural Gemstone Blue Quartz Quartz is a very common mineral that can easily be found on the surface of the earth.

Quartz is a very hard mineral.

Quartz is actually a crystal.

Quartz is formed within hollow rocks.

Quartz is often used in electrical equipment.

Sand mixed with quartz can be used to make glass!

Quartz can also be used as a gemstone in jewellery.


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