Certain metamorphic rocks such as marble.
Light purple crystal rock.
While most popular in yellow and blue topaz also occurs as purple stones.
The main crystalline quartz varieties used as gemstones are described below.
Pure quartz which is also known as rock crystal is colorless.
It is rarely seen as a tumbled stone.
Jet is a very light weight material and was popular in jewelry of the victorian era.
Hue and tone.
Various impurities are responsible for the extensive range of colors.
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A variety of imperial topaz this purple crystal is a rather rare color of the topaz mineral.
Purple crystals are naturally the birthstones of people born in the new year or just after the winter solstice which is anywhere between the last week of december until the end of january.
To properly identify your blue violet or purple mineral you first need to inspect it in a good light.
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Decide the best name for its color or.
Low silica feldspathoid bearing igneous rocks.
Jet is an organic rock similar to coal but instead of breaking like coal it can be cut carved or polished into interesting sculptures beads or faceted stones.
The hardness of the mineral is the same as quartz thus making it suitable for use in jewelry.
Amethyst is a purple variety of quartz sio 2 and owes its violet color to irradiation impurities of iron and in some cases other transition metals and the presence of other trace elements which result in complex crystal lattice substitutions.
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Pegmatites composed primarily of large crystals such as granite.
A pinkish purple crystal of topaz source.
Amethyst amethyst the purple variety is the most popular and valuable quartz gemstone.
Oxidized zones of ore bodies like copper.