1/20 ctw Cushion Cut 10x10mm Blue Topaz & Round Cut Diamond Semi Precious Pendant With Chain in Sterling Silver A gorgeous blue topaz and diamond pendant draws your instant attention to this link chain necklace. The pendant features a semi-precious 10x10mm cushion cut blue topaz in the center, surrounded by a wide border, which twists at the top to form a loop. Enhancing the border are 16 prong set round cut diamonds. Also, a milgrain finish adds to the brilliant look of the pendant, which comes along with a 1.00mm cable chain necklace. Both pendant and necklace are styled in sterling silver. Total diamond weight is 1/20 ctw.