Clark & Coombs 10K Sterling Agate Ring Large 10

Lovely vintage Clark & Coombs sterling silver and yellow gold agate stone ring. The agate is an elongated marquise shape with nice design in the stone in brown, white and clear, and it's flanked by bows finished in 10K yellow gold. Approximate size 10 as is because the band is way out of round, as shown. If straightened out, it would probably be an even larger size. It measures 1" wide in the center and weighs 3 grams on my scale. Marked with the Clark & Coombs C initials in triangles, along with Sterling 10K. It's in lovely vintage condition other than the out of round band.