How to identify the crystal bracelet

With eye observation, unless it is the top grade AAA natural crystal transparent flawless clean without scars, the general natural crystal Bracelet usually has a cotton floc package, this is not man-made crystal. For amethyst, yellow crystal such a monochrome crystal, usually to observe its two-color, even the top of the purple crystal, yellow crystal is also colored poor, through this method can be identified whether to add color. These are the easiest ways to be easy to understand. Mastering these and basic to the general crystal bracelet can be identified.