More recently there was major production of synthetic Quartz during World War II.
This synthetic Quartz was used to supply crystals for radios.
Today, Quartz is not only used for gemstone purposes, but also as a raw chemical
ingredient in the manufacturing of abrasives, cements, concrete, porcelain, glass,
and many other industrial materials.
Because of its piezoelectric and pyroelectric properties, Quartz is commonly used
in the production of watches, clocks, computers, and radios.
Bi-Colored Quartz gemstones are believed to offer the metaphysical properties of
both the gemstones exhibited. Please refer to specific Bi-Colored Quartz variety
for further information.
Bi-Colored Quartz rarely occurs naturally and most of the Bi-Colored Quartz found
on the market today has been enhanced by a heat-treatment process. For Bi-Colored
Quartz to occur naturally, the impurities in the quartz have to be affected in different
ways. For example, both sides of
the stone must be subjected to two slightly different
temperatures during the crystallization process of the Quartz for Bi-Colored Quartz
Quartz deposits occur worldwide.
Quartz is rated at 6.5 to 7 on the Moh's Scale of Hardness and besides for all of
its practical uses, Quartz is greatly important to the gem trade, accounting for
a vast, diverse population of gemstones that are for the most part suitable for
all jewelry applications.
Quartz crystals of different colors can form together to create beautiful bi-colored
stones. These can be part Citrine and Smoky Quartz, Amethyst and Colorless Quartz,
or the increasingly popular Ametrine. Ametrine combines the appeal of both the violet-purple
Amethyst and the yellow-orange Citrine in one bi-colored gemstone. Ametrine gemstones
can be found displaying an equal share of the Amethyst and Citrine as well as a
blended color affect, displaying attractive shades of rosy gold and mauve.
The most important aspects to consider when viewing a Bi-Colored Quartz is the depth
and intensity of the colors and the distinctiveness of the separation. The creativity
of the cut should also be taken into account.
Bi-Colored Quartz is generally found faceted in a rectangular shape displaying equal
amounts of the two colors. It is occasionally designed in a checkerboard pattern
of facets to increase the light reflection.
Most of the Bi-Colored Quartz found on the market today has actually been enhanced
by a heat-treatment process.
Care & Cleaning:
Quartz varieties are generally best cleaned using warm
soapy water and a soft brush. As with most
gemstones, Quartz should be kept away from household chemicals and
from prolonged exposure to extremes of heat as this can cause damage or permanent
changes in coloration. Quartz should be kept
in a fabric-lined box away from other jewelry items in order to avoid scratching.