These crystals are the result of something called magnetron ionization. This process creates an iridescent coating on the surface of the quartz crystal. The crystals are placed in a vacuum chamber and then precious metals are actually vaporized and pumped into the chamber which is then heated up to 872 degrees celsius. This is the temperature which those vaporized metals actually bond to the surface of the crystals and stick, creating the beautiful iridescent coating.

Length: 8 cm

Width: 7 cm