Lot of Sterling Silver Rings: Turquoise, Crescent & Minimalist

Lot of 3 sterling silver rings in GUC. Vintage sterling silver ring with turquoise stone marked 925 LMV Mexico. Size 5.5 Minimalist sterling silver ring featuring a small triangle marked 925 Tashi. Size 8 Vintage sterling silver crescent ring marked 'sterling' with a ©️ and unable to make out third stamp. Size 7.25 All three rings have some spots of tarnish, along with typical signs of wear.