Mid-Century Brutalist Garnet Ring in Sterling Silver Size 7

Vintage Mid-Century Brutalist style sterling silver ring with a deep blood red garnet. I thought the stone was glass when I bought it, but I tested it with a gem tester and it is indeed a garnet. The stone is 11.3 mm by 8 mm. There are fleabite chips in the stone along some of the high facets. The Ring is a size 7. Weight: 5.3 grams. No hallmarks.