You do know there are two types of Chartreux , dont you?
I would recommend you contact the GCCF for registered breeders and do a search online.
Purrs is a site that predominately is a rescue site so we dont keep information like this and to my knowledge we dont have anyone with a Chartreux as a member, I have a birman
Dont buy a pedigree except from a registered breeder who supplies you with papers and good advice. There are many who will be willing to con you with a great looking grey cat.
There are loads and loads of beautiful moggies in rescues all over the country if you could offer one a home we would be really happy.
I have two of those too