Smoky quartz is the brown to grayish variety of quartz, appreciated by collectors for its distinctive neutral coloration and frequent transparency. This trigonal silicon dioxide variety exhibits colors ranging from pale smoke-brown to opaque dark gray or nearly black, caused by natural irradiation affecting iron impurities. Smoky quartz specimens offer aesthetic appeal combining neutral earth tones with geometric crystal perfection valued in both display and lapidary applications.Smoky quartz deposits occur worldwide, with notable sources in Switzerland, Brazil, Scotland, Madagascar, and the United States. Alpine deposits from Swiss mountain environments yield exceptionally clear specimens with superior geometric precision. Brazilian sources produce darker specimens with striking coloration, while Scottish and Madagascar material contributes distinctive characteristics.Browse our smoky quartz collection featuring specimens with beautiful brown coloration and superior transparency from world-renowned sources. Our selection includes light transparent varieties through dark deeply colored specimens. Discover smoky quartz samples and add these distinctive neutral-toned quartz varieties to your collection.