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Authentic black gemstones should have a substantial weight and feel cool to the touch. When shopping for black stone jewellery, look for natural internal features—such as the "jardin" in stones or the shadowy shimmer (adularescence) unique to a black oval moonstone gemstone. At Gemondo, we provide a Certificate of Authenticity to ensure your gem is genuine and ethically sourced.

The most sought-after black gems in our collection are Black Onyx (famed for its solid, opaque depth), Black Spinel (celebrated for its diamond-like sparkle), and Black Moonstone (prized for its mysterious, ethereal flash). Each offers a different "vibe," from the high-glamour of Spinel to the organic mystery of Moonstone.

Historically, Black Onyx is the most popular due to its smooth texture and its iconic role in Art Deco design. However, Black Spinel is a favorite for those who love high-brilliance jewellery, while Black Moonstone is the top choice for those seeking a unique, "one-of-a-kind" aesthetic.

Black gemstones are a fantastic example of affordable luxury. While they offer a high-end, sophisticated look, stones like Onyx, Spinel, and Moonstone are much more accessible than black diamonds. This allows you to invest in a high-quality black gemstone set in precious metals without the premium price tag of rarer clear stones.

Quality is determined by the depth of the color and the precision of the cut. A high-quality black gemstone ring should feature a stone with a consistent "inky" tone and a mirror-like polish. In the case of Moonstone, quality is also judged by the strength of its mysterious "inner light" or shimmer when it catches the sun.