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 …

Amethyst Quartz - The Mineral and Gemstone KingdomMixture 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 …

Canadian Amethyst - The Mineral and Gemstone KingdomAmethyst with an internal coating of red Hematite under the crystal surface, found near Thunder Bay, Ontario, Canada.

African Amethyst - The Mineral and Gemstone KingdomAmethyst originating from the continent of Africa. This term in the gem trade usually applies to deeply colored or darker Amethyst.

Siberian Amethyst - The Mineral and Gemstone KingdomTerm originally used to describe very deeply colored Amethyst from Siberia in Russia. May also be incorrectly used in the gem trade …

It has been ages since I was on here and I don't quite know how to pick up where I left off. But I still have Thunder Bay amethyst and can send a flat rate USPS mailer, medium, for $40.

Detailed gemstone and jewelry information guide about the amethyst/citrine gemstone ametrine: information & pictures.

Green Amethyst - The Mineral and Gemstone KingdomLight green gem form of Quartz that is artificially colored by heat-treating certain types of Amethyst. Also known as "Prasiolite".

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Non-Metallic Elements glossary term at minerals.net educational reference guide