TRANSLATION OF OTHER LANGUAGE

 

Sunday, August 2, 2009

TYPE OF CRYSTAL

A shining and quality of the crystal bracelet depends on the type of crystal. Basically, in the chemical type of view, there are 4 types of crystal as follows:
Covalent Crystals - This is a crystal which has real chemical covalent between all of the atoms in the crystal. So really a single crystal of a covalent crystals is really just one big molecule. An example of this is a crystal like diamond or zinc sulfide. Covalent crystals can have extremely high melting points.
Metallic Crystals - Individual metal atoms sit on lattice sites while the outer electrons from these atoms are able to flow freely around the lattice. Metallic crystals normally have high melting points and densities.
Ionic Crystals - This is a crystal where the individual atoms don't have covalent bonds between them, but are held together by electrostatic forces. An example of this type of crystal is sodium chloride (NaCl). Ionic crystals are hard and have relatively high melting points.
Molecular Crystals - This is a crystal where there are recognizable molecules in the structure and the crystal is held together by non-covalent interactions like van der Waals forces or hydrogen bonding. An example of this type of crystal would be sugar. Molecular crystals tend to be soft and have lower melting points.

ABOUT CRYSTAL BRACELET

Crystal bracelet is a clear, transparent form of crystallized quartz or glass resembling ice bracelet. Crystals are solids that form by a regular repeated pattern of molecules connecting together which the arrangements of the building blocks (atoms and molecules) can be random or very different throughout the material. In crystals, however, a collections of atoms called the Unit Cell is repeated in exactly the same arrangement over and over throughout the entire material.
Because of this repetitive nature, crystals can take on strange and interesting looking forms, naturally. When we grow crystals we are separating all the building block molecules into individual units in water and letting them fall naturally into their appropriate place in the repetitive structure as the water evaporates.
There are so many designs of crystal bracelet design which is full of style, elegance and grace with crystal bead bracelets of various colours. A Crystal bracelet is an article of jewelry which is worn around the wrist. Some crystal bracelet are also used for medical and health. Crystal bracelet have been worn for many years. The wearing of crystal bracelet is a universal act which have historically expressed value. The crystal bracelet is a neutral object whose inner structure exhibits a state of perfection and balance. Have you ever wondered about the power of crystals bracelet? Did you know that crystals bracelet have the metaphysical power of healing?No one seems to know exactly how crystals bracelet work. They were first used in Atlantis, as the tales have been told. Today crystals bracelet are used in our daily lives and thousands of people world-wide swear by the use of crystals bracelet for a variety of mental, emotional, and physical problems.