Quadrillion Cut
A Quadrillion cut is a square-cut stone. This fancy cut is relatively
new and is also known as a Princess or Squarillion cut.
Quartz
Quartz is a crystalline mineral that come in many forms, including
amethyst, aventurine, citrin, opal, rock crystal, tiger's eye, rose
quartz,and many others. Rutilated quartz and tourmalinated quartz
have needle-like inclusions of other minerals. Quartz has a hardness
of 7.0. This common mineral is found worldwide.
QUARTZITE
A hard rock made of interlocking quartz crystals formed when sandstone
has been subjected to intense heat and pressure.
Quartz Druze
Quartz druze is a layer of quartz crystals that form within a mineral
crust, like the inner cavity of a geode. For example, the inner
cavity of agate geodes are often lined with a druze of sparkling
quartz crystals.
Quinzite Opal
Quinzite opal is a red to pink type of opal. This opal is also called
Quincite, Quincite Opal, and Rose Opal.
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