Quick Facts on Amethyst Stone
| Chemical Formula |
: | SiO2 |
| Hardness |
: | 7 |
| Specific Gravity |
: | 2.6 - 2.7 |

Amethyst is a
vivid purple or violet form of transparent quartz used as a
gemstone. The transparent purple quartz is the most popular quartz
variety used in jewelry. It was named after the Greek mythological
maiden who was turned to stone by the God Dionysus and is
characterized by vivid colors and large clean crystals that make
beautiful gems.
Amethyst is a beautiful gemstone available in a wide variety of cut
and uncut stones, calibrated sizes and shapes, including many fancy
shapes. Because of the patchyness of the color distribution in the
crystals, amethyst is cut as brilliant round cuts to maximize the
color.
Amethyst can occur as long prismatic crystals that have a six sided
pyramid at either end or can form as druzes that are crystalline
crusts that only show the pointed terminations. As a mineral
specimen, amethyst is popular for its color and nice crystal shapes
that produce a handsome, purple, sparkling cluster.
However, amethyst is not the same everywhere. Different localities
can produce a unique amethyst to that particular region or even to
that particular mine.
The color range varies from pale lilac to deep purple. It is mined
in Brazil, Uruguay, Bolivia and Argentina, Zambia, Namibia and other
African countries. Very dark amethyst, mostly in small sizes, is
also mined in Australia.