Mixed Shape Diamond Tennis NecklacePear, marquise, oval, emerald cut and heart shape diamonds alternate across 18K white gold in a sequence that gives the necklace an organic, almost sculptural quality. At 11. 86 carats total weight, the stones are large enough to read individually while the line holds together as a whole. A necklace that works as a bridal piece, an anniversary gift, or something kept entirely for oneself.