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QUARTZ
PREMIUM QUALITY PRODUCTS
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QUARTZ
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QUARTZ
Features:
Quartz is one of the most well-known minerals on earth. It occurs in basically all mineral environments, and is the important constituent of many rocks. Quartz is also the most varied of all minerals, occurring in all different forms, habits, and colors. There are more variety names given to Quartz than any other mineral.
Description:
Most mineral reference guides list
Chalcedony
as an individual mineral, but in reality it is a variety of Quartz. It is the
microcrystalline
form of Quartz, forming only occurs in microscopic, compacted crystals. This page deals only with the
crystalline
forms of Quartz.
Chalcedony
is listed on its own dedicated page in this guide. Other important varieties of Quartz, such as Amethyst,
Citrine
, and
Agate
, also have dedicated pages due to their popularity and varieties.
Some forms of Quartz, especially the gemstone forms, have their color enhanced. Almost all forms of the yellow-brown variety Citrine are in fact
heat treated
. Much Amethyst is also heat treated to intensify color, and a green transparent form known as "Green Amethyst" or "Prasiolite" is formed by heat treating certain types of Amethyst. There is also a transparent sky blue form of Quartz crystals, as well as a wildly
iridescent
type that are synthetically colored by
irradiation
of gold. In some localities,
Hematite
forms a thin red or brown layer internally in the Quartz crystal, giving it a natural bright red to brown coloring, and sometimes even a mild natural
iridescence
.
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