This was made after Gemma returned to the US form Mexico. It is sculptured with clay and glazed with a milky white glaze on the face and a dark brown leaving the "hair" with no glaze at all.
A wonderful book about Gemma's tile work is Tile Decorating with Gemma, by Dona Meilach ISBN0-517-529513
All of the pictures in the book are her work, unless otherwise specified. The book is not only a gallery of her art, but Gemma shows you how to use her technique.
You can get the book used on the Internet