This art deco era ring features three onyx stones and 10 marcasite stones in an elegant setting. It's a great transitional piece and easily goes from casual looks to dressy. 
 Size 8 1/4 Sterling Silver Onxy Marcasite Signed GM 925
Approx. Measurements: 5/8 inch x 3/8 inch
Condition: Great with surface wear consistent with age and use

This item is sold from an excellent, highly rated vintage boutique in Pennsylvania.