It is the purple variety of the mineral quartz, and its most valuable and prized variety Procedure performed to help identify a mineral Its name derives from the greek amethystos, which means not drunken, as amethyst in antiquity was thought to ward off drunkenness
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The color of some amethyst specimens from certain localities slowly fade upon prolonged exposure to light
Although amethyst, the purple variety of quartz, and citrine, the yellow/orange variety of quartz belong to the same scientific mineral classification, they have always been distinguished as individual gemstones.
Although amethyst, the purple variety of quartz, and citrine, the yellow/orange variety of quartz belong to the same scientific mineral classification, they have always been distinguished as individual gemstones The unique color combination of ametrine has sparked an interest and appeal to this distinctive gemstone. Amethyst is the purple variety of the mineral quartz, and is its most famous and valuable gem variety Quartz also contains other gemstones such as citrine, rose quartz, and smoky quartz
The color of amethyst is most often caused by iron impurities, though it can also be colored by natural radiation exposure Amethyst is sometimes heat treated to deepen the color, or to transform it into. Amethyst amethyst, the purple variety, is the most popular and valuable quartz gemstone Amethyst ranges from light to dark purple
See the amethyst gemstone page for more details
It is usually colored by heat treatment of amethyst or smoky quartz. This term in the gem trade usually applies to deeply colored or darker amethyst. It is purple on top and white or clear on the bottom It may also be banded purple and white
Amethyst quartz is usually tumbled or polished into beads. Some important gemstones are not here yet We are constantly working on expanding this list. The mineral datolite datolite forms in very attractive crystals that can be highly lustrous and very sparkly, or have frosted crystal faces
These nodules can be sliced and polished to show beautiful coloring and patterns within the nodule
Nodules are often colored by copper inclusions.
