This precious collection oval shaped blue sapphire opera necklace is fine as a gift. Outlined with 272 round diamonds weighing 2. 73 carats, 42 round diamonds with a total weight of 5. 35 carats, 28 round blue sapphires with a combined weight of 8. 97 carats, 14 oval shaped blue sapphires weighing 14. 21 carats, and 1 oval blue sapphire with a significant weight of 2. 66 carats in a glittering setting. Additional Information: 272 round diamonds weighing 2. 73 carats, 42 round diamonds with a total weight of 5. 35 carats, 28 round blue sapphires with a combined weight of 8. 97 carats, 14 oval shaped blue sapphires weighing 14. 21 carats, and 1 oval blue sapphire with a significant weight of 2. 66 carats.