Sterling Silver Signet Ring with Turquoise Size 8.5

Vintage sterling silver signet ring that is set with genuine turquoise. This stone looks like it has a crack, but that is matrix and it is not cracked at all. 

Ring was cast in Taxco, Mexico, Size 8.5 and measures 7/8" wide. Weight: 13.8 grams. Hallmarked inside. Tarnished. Will polish up.