A Wonderful and Rare Antique Cats Eye Chrysoberyl Ring, 18K Victorian Style Setting, approx 4.5ct Gemstone. These gemstones are very hard to come by and this cats eye chrysoberyl measures about 9.5 x 9mm oval and is estimated at about 4 1/2 carats in gem weight. The stone is set in an antique vintage setting marked for 18K gold with lovely Victorian style detailing on the sides. Overall the ring measures about 13/32 inch long by about 3/4 inch wide from side to side. Ring Size: about 7 1/2 (could be resized by your jeweler or ask me about using mine before shipping). This ring was acquired through an estate collection and is in lovely vintage condition.