Chalcedony

Chalcedony is a microcrystalline variety of quartz (SiO₂), characterized by its fine fibrous structure and typically waxy lustre. It occurs in a wide range of colours, including white, grey, blue, and various shades produced by mineral inclusions. Commonly forming botryoidal, stalactitic, and massive aggregates, chalcedony develops in veins, cavities, and nodules within volcanic and sedimentary rocks, often through low-temperature silica deposition. Its diverse colours, textures, and natural formations make it a popular material among mineral and gemstone collectors. Explore our selection of genuine chalcedony specimens for your collection.