Posted on March 1, 2018April 1, 2021 by Laurie Donovan Aquamarine Jewelry Aquamarine is 7.5 – 8 on the Mohs Hardness scale making it extremely durable and suitable for all jewelry including rings, pendants, earrings, and bracelets. Shown here is a cushion-cut aquamarine with a black Tahitian pearl drop pendant. Post navigationPrevious post: Aquamarine, March BirthstoneNext post: Aquamarine, Loose Gemstones