It is a book that I read in the 70's. It had ponies made of glass that would come to life and a little girl who would play with them. The ponies were not regular colors. I think the ponies hid in the day time but would come out at night. If I remember correctly it was a hardbound book. I remember reading the book over and over and would love to find a copy for my granddaughter. I thought it was called the Sand Ponies but I recently bought that book and it is not.
