Twogether Sterling Silver and 1/4cttw Diamond Necklace. This diamond necklace features the classic Twogether design in pendant form. Contains .25cttw of G/SI round diamonds pave set. Comes with an 18 inch sterling silver necklace. When ONE plus ONE equals US, twogether diamond rings are designed to celebrate the Twoday, Twonight and Twomorrow of your relationship.