14kt White Gold Pendant with Blue Topaz and Diamonds

14kt White gold pendant with one cushion cut natural blue topaz gauging 14.90 X 14.82mm, carat weight 15.36ct, clarity VS, colour Blue. There are also thirty two round brilliant cut natural white diamonds gauging 1.60 X 1.50mm (avg.), total carat weight 0.64ct.tw., clarity VS2-SI2, colour F-G and cut Good. The pendant is on a 10kt White gold 18” chain. The total weight of the necklace is 17.92 grams.