The role of crystal is more, there are spiritual effects. And the optical effect of the crystal
Jewelry we are talking about here. Some people may not understand this special effect of crystal jewelry, but after reading it, it is easy to understand.
In the light of the refraction, reflection, interference, diffraction and other effects, some crystal can cause cat's eye effect, star effect and rainbow effect, called the special optical effect of crystal.
Cat eye effect. Some sparkling crystal surfaces give rise to a shiny band of light caused by visible light refraction and refraction, like a cat's eye, called the cat's eye effect. As the light source or arc crystal moves, the light band also moves in parallel. Crystals that produce a cat's eye effect must have a dense array of aligned inclusions or structures. In addition, the bottom plane of the arc surface crystal should be parallel to the plane where the inclusion is located.
Star effect. Some arc-shaped crystal surfaces exhibit a group of radially flashing bright lines under the effect of visible light refraction and refraction, which resemble the twinkling stars in the night sky, known as the crystal starlight effect. The crystal that can produce a starlight effect must contain two or more groups of aligned inclusions or structures, and the bottom of the crystal is parallel to the plane where these inclusions or structures lie. Crystal Starlight utility can be divided into three shots of starlight, four shots of starlight, six shots of starlight and so on.
Rainbow effect. Gemmology calls this optical effect a "colorful glow." It is a crack produced in some crystal crystals due to geological action. Under the irradiation of natural light, the cracks interfere with visible light, and the color produced by diffraction is called the rainbow effect of crystal. In fact, all gems with cracks can produce rainbow effects.
Crystal jewelry has these effects on the crystal itself is more good than harm, can avoid weaknesses.