TLC New vintage tiny Barbie pink rose zircon October birthstone silver ring

TLC New vintage tiny Barbie pink rose zircon October birthstone silver ring Quick list New vintage c. 1970s. No hallmarks but I think it’s silver and made in Mexico. Very thin flat band. Rustic. Feels like handmade. Not sure if it’s genuine or synthetic stone. Very vivid bright pink. Deep set prongs. Note: the band is broken at the welding spot under setting. I thought it was an adjustable ring but it’s not. See pictures. I think it’s still wearable but it depends on how fiddle-y you are and how rough you are with your hands.