Diamond Halo Necklace, In marked 14K on clasp, center diamond measuring approx. 4.8mm or .45ct is surrounded by fifteen tiny single point diamonds for an estimated total weight of just over a half carat, the outer diameter of the whole pendant measures 7.25mm giving the look of a 1.25 carat plus solitaire, chain measures 17" long, total weight is 1.7 grams.