This precious collection halo oval shaped blue sapphire choker necklace is faultless for your other half. Engineered with 576 round diamonds weighing 2. 74 carats, 18 pear shaped diamonds with a total weight of 2. 00 carats, and 19 oval blue sapphires with a combined weight of 14. 07 carats in a flashy design. Additional Information: 576 round diamonds weighing 2. 74 carats, 18 pear shaped diamonds with a total weight of 2. 00 carats, and 19 oval blue sapphires with a combined weight of 14. 07 carats.