Contains some gems in the very small needle-like, tubular inclusions,precious stone wholesal such as rutile. These needle-like, tubular inclusion of the intersection between them for 60-degree angle, with each other precious stones arranged parallel to the horizontal axis. If this gem processing into convex shape, in the role of the reflection of light, the Stars will have effect. That is, in the processing, and the end to make Xingwang parallel, cross-precious stones should be at the centre, which will have four or six-lane, as Stars flash flash, glamorous, it was named-precious stones. Usually two or three lines intersect line for four or six Daoguang Dao, a four-, six-lane intersection of eight or 12 Daoguang.
　　
???? Contains some gems in the fibrous, tubular, needle-like inclusions.precious stone wholesal These inclusions are parallel with the same direction as the crystallization of gemstones, precious stones cut if this ground into a convex shape, with the bottom of the intron parallel, when light strikes into the stones on, these inclusions with a focus on middle - reflection, in which people can see stones emerged with a bright light,precious stone wholesal we call it-live. If the rotation gems, but also will be live flashing light, similar to a cat's eyes. This optical phenomenon known as cat's eye effect.