Ross-Simons - .20 ct. t. w. Ruby Ring in 14kt Yellow Gold. Size 7. RS Pure. Modern designs that complete your outfit and complement your personality. Stacked or solo, this ring will add a pop of color to any look. It showcases .20 ct. t. w. ruby rounds in polished 14kt yellow gold. 1/16" wide. Ruby ring. Ruby birthstones are the perfect gift for July birthdays.