A Wonderful Antique Star Sapphire Diamond Ring, Vintage Art Deco circa 1930's in 18K Yellow Gold Setting, a Wonderful Wedding Ring Idea. This gorgeous original Art Deco Era piece holds a natural star sapphire gemstone at its center measuring about 9.5 x 9mm. The star sapphire has beautiful coloration and a luminous "glow" in the light with star-like striations seen in the sunlight. The setting is elegant Art Deco Era and is made of 18K yellow gold. There are eight (8) antique single cut diamonds set on the sides. Overall the ring measures about 5/8 inch long by about 3/4 inch wide from side to side. Ring Size: about 7 (could be resized by your jeweler or ask me about using mine before shipping). This was acquired through an estate collection and is in lovely vintage condition with a nick on the surface of the sapphire mentioned for accuracy.