Our 2 Stone Gold Interlocking Circle Eternity Birthstone Necklace makes the perfect gift for mom, grandma or that special someone. To represent an unbreakable bond, this necklace features two 2mm birthstones of your choice set in a 1/2 inch gold plated sterling silver circle, which is then intertwined with a larger 3/4" circle. This one of a kind necklace comes attached to a 16 inch rolo chain with a 2" extender.