Our company is recognized as the prime natural quartz crystals manufacturer and amongst the reliable suppliers of the same, based in india. The unmatched quality and unsurpassable performance has attracted various national as well as international clients to place bilk orders for the rough quartz. The accurate physical and chemical properties have made the quartz cluster ideal for various industrial applications. Moreover, customers are eased with the availability of the below mentioned varieties of the quartz in varied grades as per the specific requirements: varieties of quartz other than clear quartz, quartz occurs as amethyst, aventurine, citrine, carnelian, herkimer diamonds, jasper, onyx, rose quartz, rutilated quartz, smoky quartz and tourmalinated quartz. Rose, rutilated and smoky quartz will be covered here. The properties of amethyst, aventurine, citrine carnelian jasper and onyx are covered elsewhere in jewelrysupplier.com. Herkimer diamonds are quartz crystals with double terminations and tourmalinated quartz contains hairs of tourmaline crystals, but both are minor quartz family members. physical properties of clear quartz : hardness : 7.0 on moh's scaleindex of refraction : 1.544-1.553birefringence : 0.009streak : whitespec. Grav. : 2.5 - 2.7crystal : hexagonal (prisms, pyramidal) fracture : conchoidalcleavage : nonetenacity : brittlein group : silicates, tectosiliates, silica group : or as an oxide by a few referencesother names : silica (describes quartz, chalcedony, and opal) alpha quartz or high quartz (describes quartz stable at normal room conditions.environment : develops in a wide variety of environments, igneous, metamorphic, hydrothermal.transparency : transparent to opaqueluster : most specimens have a vitreous luster; some yellow or brown are resinous; earthy specimens are dull; very rare varieties have an adamantine luster other marks for identification purposes: many specimens fluoresce. All specimens are triboluminescent and piezoelectric.striking features : hardness, crystal forms, striations on crystal faces, and frequent appearance of conchoidal fractures on crystal faces.complex tests : dissolves in hydrofluoric aciddistinguishing from similar minerals: beryl is harder (7½ - 8), without the horizontal striations of quartz; feldspar is a softer stone (6), with perfect cleavage; calcite is very soft.typical cutting styles faceted, cabochons