Smoky quartz is the brown to grayish variety of quartz, prized by collectors for its distinctive neutral coloration, transparency, and geometric crystal perfection. This trigonal silicon dioxide variety exhibits color ranging from pale smoky to nearly opaque dark brown or gray, caused by natural irradiation affecting iron impurities. Smoky quartz specimens offer aesthetic appeal and are valued for both display and lapidary applications.Smoky quartz deposits occur worldwide, with notable sources in Switzerland, Brazil, Scotland, Madagascar, and the United States. Alpine quartz from Swiss mountain environments yields exceptional specimens with superior clarity and geometric precision. Brazilian deposits produce substantial crystals with striking dark brown coloration. Scottish smoky quartz has historical significance in traditional collections, while Madagascar and American sources contribute significant material.Browse our smoky quartz collection featuring specimens with distinctive brown coloration and superior crystal development from renowned worldwide sources. Our selection includes transparent specimens, dark varieties, and crystal clusters. Discover smoky quartz samples and add these neutral-toned quartz varieties to your collection.