Chalcedony

About Chalcedony

Chalcedony is a microcrystalline form of quartz prized by collectors and lapidaries for its fine-grained texture, diverse colors, and exceptional polish quality. This silicon dioxide variety lacks visible crystals to the naked eye, instead forming dense, compact masses with waxy luster and exceptional transparency when polished. Chalcedony varieties—including agate, carnelian, and chrysoprase—represent the most collectible microcrystalline quartz category.Chalcedony deposits occur worldwide in volcanic and sedimentary rocks, with major sources in Brazil, Madagascar, India, Australia, and the United States. This mineral forms through low-temperature silica precipitation in cavities and veins, creating the characteristic fine-grained structure.Explore our chalcedony collection featuring diverse colors and varieties from renowned worldwide sources. Our selection showcases the full spectrum of this versatile microcrystalline quartz. Browse chalcedony specimens and discover polished pieces and raw formations.