Approximate measurements are 14.5mm long x 10mm wide x 5mm thick. This pendant comes on a very nice dainty.03mm, 20, 14kt yellow gold chain. The back of the pendant is stamped 10K and the maker's mark DI. The tab on the chain is stamped 14k, both pieces together weigh approximately 2 grams. The item "10Kt Yellow Gold Double Trillion Shape London Blue Topaz Necklace 14K Gold Chain" is in sale since Thursday, January 23, 2020. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "mackenziestreasures" and is located in Dover, Pennsylvania. This item can be shipped to United States.