Brazilian smoky quartz comes in every shade of brown, from a light tan to nearly black. Brazilian smoky quartz is a unique charmer and sacred stone for a number of cultures. It belongs to the macrocrystalline quartz group, along with amethyst, ametrine, citrine and tiger's eye. It manifests itself in an earth-toned clear look that comes in shades of cognac, brown to black or smoky gray. This gemstone features a square shape, 1.29-carat weight and 7mm size.