Silver Bracelet with Purple Detail

Stamped 925 🇲🇽 with MM TCH-10 (I think it’s a C) I’ve had this since the early 90’s for sure and probably even before that. It’s in nice condition given the age. It has 4 slices of eggplant purple. Not sure what the material is. Size is in photos. Fairly solid piece. There are surface scratches consistent with age and use. Refer to photos as they are part of the description too! Any questions please ask!🌞