Crystal Matrix

Does anyone know about the Crystal Matrix Stones ?? I had a wonderful channelling with a blue opal crystal who called him/herself Girasol, which i have since found out is another name for the crystal. I am currently reading a book called Serpent of Light, beyond 2012 by Drunvalo Melchizedek and it recounts his experience with Ascended Masters and how he has had to return certain crystals to the Earth in certain sacred sites. Anyone got any comments on this ????