Item: Vintage Mexican Silver Black Grey Chrysoberyl Ring Mens or Ladies. This is stamped MCP Mexico 925. I think the stone is Chrysoberyl, very dark charcoal with a lighter grey play of light. The ring box is not included in the sale of the ring.
 
Measurements: Size 9.75. It weighs 6.59 grams.
 
Condition: Vintage, previously owned. There is no damage to note. There are only minor signs of age/use/patina.