You are viewing a 10K yellow gold ring made in the 1970's. The ring is set with a round Ruby weighing about 1/4 carat. Surrounding the Ruby are Diamonds. The ring is marked 10K. It is a size 6 1/2 and can be re-sized .The ring measures 13 mm or just over 1/2" long up the finger;and,16 mm across. The ring weighs 3.1 grams.