The Gemstone Amethyst - The Mineral and Gemstone Kingdom
Amethyst was once highly regarded among the precious gemstones like Ruby and Emerald, but discoveries of huge Amethyst deposits since the 1800's have made Amethyst fairly inexpensive and very obtainable. Amethyst colors range from light to dark purple, and the transparent deep purple colors are the most highly regarded.
Amethyst: The purple Quartz mineral Amethyst information and …
Amethyst is one of the most popular gems. It has a beautiful color and is fairly common, making it an inexpensive and widely used gem. Most Amethyst is faceted into jewelry cuts, and some are cut as cabochons. Large, massive chunks of Amethyst banded with Quartz is sometimes carved into ornaments. Amethyst is also very popular among mineral ...
Ametrine: The gemstone Ametrine (Amethyst, Citrine) info
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 Quartz - The Mineral and Gemstone Kingdom
Mixture of Amethyst and Milky Quartz (or clear Quartz). 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.
Amethyst from Rhode Island - The Mineral and Gemstone Kingdom
Amethyst from Rhode Island from Diamond Hill, Ashaway, south of Hopkinton, Washington County, Rhode Island
The Mineral and Gemstone Kingdom: Image Photo Gallery
Amethyst GEMSTONE PHOTOS: View Additional Images for this gemstone Ametrine ...
The Gemstone Citrine - The Mineral and Gemstone Kingdom
Virtually all gem Citrine is not naturally colored, but rather colored from heat treatment of Amethyst. Heating Amethyst at about 750 degrees Fahrenheit will produce a mild yellow color, and heating to about 1700 degrees products deep orange to reddish colors. Most heat treated Citrine has a reddish tint.
Citrine: The quartz mineral Citrine information and pictures
It is a widely used as a gemstone, and after Amethyst it is the most popular Quartz gem. Most Citrine is formed by heat treating purple Amethyst. Citrine may also be produced by heat-treating Smoky Quartz from certain localities. In some Amethyst deposits, the Amethyst has been partially or fully changed over to yellow Citrine by natural means ...
Quartz: The gemstone Quartz information and pictures - The …
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Gemmy - Minerals.net Glossary of Terms
Gemmy glossary term at minerals.net educational reference guide