Black Onyx

Black Onyx is a striking variety of chalcedony, characterized by its deep, uniform black hue and smooth, glossy finish. Formed through the deposition of silica in gas cavities within lava, this cryptocrystalline quartz gains its intense color from natural impurities or heat treatment. With a Mohs hardness of 6.5-7, it is durable enough for everyday wear while maintaining an elegant, timeless appeal.  

Prized since antiquity for its protective and grounding properties, Black Onyx is often carved into cameos, beads, or cabochons to highlight its sleek, jet-black surface. Its neutral yet bold aesthetic makes it a versatile choice for both modern and classic jewelry designs, from statement rings to minimalist pendants. Whether used as a standalone piece or paired with contrasting gems, Black Onyx exudes sophistication and mystery.