Vintage Marcasite and turquoise flower ring sterling silver 925. Stunning! 5

beautiful vintage sterling silver marcasite and long turquoise blue stone ring. it has a flower motif. it's probably from the '60s or maybe 40's? We found it in my great Aunt's jewelry box. She grew up in San Francisco. it may be signed but my loup broke so I have to list it as unsigned. it's definitely sterling silver though that was tested. All the stones are intact. it's a very unique and beautiful ring for small fingers or a pinky ring, it's only a size 5.