Turquoise and Coral Chip Inlay Southwest Bucking Horse Belt Buckle

This is a nice vintage belt buckle. It has turquoise and red cora inlay along with some sort of white stone as well. I have no way of knowing if this is real or synthetic stones. The inlay feels very "flat" so it may be a soilid piece made to look like crushed stones. I am just not sure what it is.The buckle is NOT silver. It is some sort of base metal (probably brass) with a silver tone plating. The inlay is in very good condition. I don't see any missing pieces in the design. The metal is also in good condition with just some light scratches and a few scuffs from normal wear. It is nice and shiny and I don't see any discoloration on the buckle. This is a HEAVY buckle weighing 235.8g or just over 0.5lb.. There are no markings anywhere on the buckle so I have no idea who made it. (Bin#MS3)