Rosita Singer Belt Buckle with #8 Mine Turquoise, Signed

This??? Is a beautiful Rosita Singer, wife of Tommy Singer and mother of Richard Singer, sterling silver belt buckle with what looks to me to be #8 Mine Turquoise. There’s a bunch of beautiful stamp work and some overlay in this. It measures 3″ x 2 3/4″ and the keeper on the back is 1 1/2″ wide so it will easily accommodate that size belt.
It is signed  T&R Singer, which is the stamp that Tommy Singer made for his wife before he walked on in a tragic motorcycle accident in 2014. Tommy Singer was THE premier artist known for his stamp work.