This is a vintage 10K yellow gold and 925 Sterling Silver mens ring with a strip of diamonds. Marked 10K, 925 SS, and MJN maker mark for the MJ National Jewelry Co., NYC. It has a boxy block style setting with a thick slab of 10K yellow gold hand applied to the top and a solid back. It has a very small testing notch on the top and has not been professionally polished. Weight is 8.8 grams. The very top is measures 5/8″ long by 3/8″ wide. Ring size is 11 3/4. Diamond carat weight is .04 carat. Having a showy chunk of gold on top and deep carved recesses on one side only this is a lovely modernist ring for your jewelry collection.