Crystal Desk Clock
The crystal clock handicraft is made of high quality K9 crystal material, the material selection is exquisite, the modelling is novel and unique and elegant, it is made by grinding, digging holes, polishing and other techniques, it is a perfect combination of crystal and clock, it is a good...
The crystal clock handicraft is made of high quality K9 crystal material, the material selection is exquisite, the modelling is novel and unique and elegant, it is made by grinding, digging holes, polishing and other techniques, it is a perfect combination of crystal and clock, it is a good crystal decoration, it is a symbol of time.
Crystal, a type of gem, quartz crystal, belongs to the quartz family in mineralogy. The main chemical composition is silica, the chemical formula is SiO2. Pure quartz, traditionally known as rock crystal or transparent quartz, is colorless, transparent or translucent, and is often used in hard stone carving. Quartz contains impurities when the color is different, colorless transparent crystal is called crystal, milky white weigh milk quartz, light red weigh rose quartz, purple weigh purple crystal, yellow brown weigh smoke crystal, tea crystal, black call ink crystal.
Crystal form of common crystal
Quartz types are divided into large crystals (single crystal visible to the naked eye) and microcrystalline or cryptic crystals (clusters of crystals visible only at high magnification rates). Cryptocrystalline variants are translucent or largely opaque, and transparent variants tend to be large crystals. The chalcedony is a cryptocrystalline form of silica, consisting of quartz and its fine copolymer of monoclinal polycrystalline mullite. Other opaque gemstones of quartz, or mixed rocks of quartz, usually consisting of contrasting bands or color patterns, agate, ruby pulp, onyx, hematite and jasper, are cryptocrystalline complexes.
Symbiosis of cryptocrystalline (central) and phanerocrystalline structures
Quartz belongs to trigonal crystal system, and its natural crystallization habit formed the form of hexagon prism. Showing a glassy luster (refers to the optical property of reflecting light from the surface of the gem), and the fracture is of grease luster. The eutectic (naturally differentiated fracture) crystalline endogenetic deposits include pegmatite, hydrothermal and skarn. Exogenous deposits are common in sand mines. Gem-grade crystals are mainly produced in caves or pegmatite veins and are produced almost everywhere in the world. Quartz crystals can also be grown artificially.