Smoky Quartz Q.B. Natural with Metal Base — Raw

Quality B Smoky Quartz is a variety of quartz (SiO₂) with a brown to dark gray color, originated by the same process as Quality A Smoky Quartz — natural exposure to gamma radiation from radioactive elements in the surrounding rocks, generating defects in the crystalline lattice associated with color centers involving aluminum and hydrogen ions. The Quality B classification differs from Quality A due to the higher incidence of inclusions, veils, internal fractures or irregular color distribution, natural characteristics of the crystalline growth process. It maintains the same physical and chemical properties of the species, with the distinction between qualities being exclusively a visual and commercial selection criterion. Hardness: 7 on the Mohs scale. Density: 2.65 g/cm³. Crystalline system: trigonal. The product is sold with a metal base included, ready for display. The measurements and weight stated refer to the complete product (crystal + base). Available variations, approximate data: Weight: 0.180 to 0.600 kg (approx.) Dimensions: 10x4x4 cm to 15x6x6 cm (approx.)