3D laser engraved color crystal is a new technology of crystal material application. The element content inside the blank color crystal is different from the common blank crystal. It can not distinguish them with the eye. There are two steps to process the 3d color image inside the crystals: Firstly, engraving the blank color crystal by the subsurface engraving machine, it is same as the engraving inside the common blank crystal. The engraved images inside the crystal are white completely. Secondly, adopting the special heat treatment, the white dots become the color dots such as red, yellow, black etc. At present, only single color is available. You are welcome to send us the image design, engraving for you!

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