I purchased this cuff bracelet new, back around 1989-1991. It is signed “Betty Thomas” and “Sterling”. Not much info on Ms. Thomas online but I’m assuming she used real turquoise. Can anyone help me identify which mine this turquoise came from? You can’t tell from the picture, but the stone is pretty shiny, not as shiny as glass but it has some depth to it. The matrix is a rust color. Don’t know if it’s stabilized. Any information would be appreciated.