Onyx – Jewelry Notes https://www.jewelrynotes.com An Online Magazine About Jewelry Thu, 12 Feb 2026 11:58:16 +0000 en-US hourly 1 Onyx Gemstone Guide: Quality, Cleaning & Care, Symbolism https://www.jewelrynotes.com/onyx-gesmtone-guide/ Wed, 30 Jan 2013 15:30:00 +0000 http://www.jewelrynotes.com/?p=4376 Onyx is a mineral, like marble, granite or quartzite. It is part of the quartz mineral group and is a layered stone. Some of its layers may contrast. Onyx is a variety of chalcedony, which consists of quartz and moganite, and it is mainly found in India, Madagascar and Brazil. In the U.S., it can […]

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