Crystal, academic name rock crystal, rare mineral, a kind of precious stones, quartz crystals, on mineralogy belongs to quartz, the main chemical composition is SiO2, chemical formula for SiO2, pure form a colorless, transparent crystal, when containing trace elements Al, Fe in pink, purple, yellow, brown, etc, formed by the irradiation of trace element of different types of color heart, produce different colors, such as purple, yellow, brown, pink, etc. Called inclusions containing associated mineral inclusions crystal, such as development, green ghost, red rabbit hair, the package for the rutile, tourmaline, actinolite, mica, chlorite, etc.
Crystal is a kind of Quartz Crystal mineral. Western countries are think as long as it is transparent Crystal, so the word contains a colorless transparent Crystal glass (blue) K9 class, common glass, also contains natural mineral Crystal. Is China’s ancient name of crystal water extract, water garden, jade, crystal, such as a dozen call, in the end han three figure will Suan Ni purification. And, therefore, in order to differentiate, usually in international (Rock crystal) referring to natural crystal. Well developed single crystal as the six-party cone, so often to block or granular aggregate, usually colorless, gray, cream, contain other mineral elements in purple and red, tobacco, tea, etc.
The crystal is 7 mohs hardness for mohs hardness, quite generally hard steel file. In 1824, a man named frisch. Moss Austria mineralogist, 10 varieties from many minerals, after a scientific experiment to measure their relative hardness, the resulting crystal hardness of mohs 7. Although the use of national bureau of standards, promote more scientific, hardness tester, but the jeweler in many countries in the world, is still used to mohs hardness scale.
The density proportion of crystal is about 2.66 g/cm3. This means that a certain volume, the weight of the crystal is 2.56 to 2.66 times the weight of the same volume of water. The massive variant crystal density may be slightly higher.
Speak of crystal, everybody knows, it is glittering and translucent, radiate brilliant light, so beautiful. Crystal decoration is widely used for wedding, events and home. If you want to add shimmering style to your home decor, pls pick out some elegant Crystal Crafts from our website without hesitation.
