Onyx is a showstopper of a stone. Used for centuries in jewelry, carvings, and for architectural accents, the stone’s stunning swirls and speckles of rich, vibrant color and unusual translucency make it an extremely sought-after material. Rarer than fine marble and highly desirable for its unique appearance, it remains a popular choice for homeowners looking to add a truly special touch to their homes. And also, make everyone else jealous.
It is mostly made of calcite and is formed in caves in several areas around the world, mostly in the Middle East, North Africa, and South America. When water drips from stalactites and stalagmites and then evaporates, it leaves behind deposits of calcium carbonate and other minerals. And this causes the stone’s colorful bands, swirls, and spots.