Posted on February 10, 2018May 2, 2024 by Laurie Donovan Amethyst Jewelry Amethyst is a purple variety of quartz. It is the birthstone for February and for the 6th wedding anniversary. It is relatively inexpensive, yet durable enough for use in many types of jewelry. It is 7 on the Mohs Hardness scale. Post navigationPrevious post: Amethyst, February BirthstoneNext post: Amethyst, Loose Gemstones