This 18k white gold diamond necklace contains 27 round brilliant cut diamonds weighing 3.38 ct.

This 18k yellow gold diamond necklace contains 8 round brilliant cut diamonds with a total weight of 1.0 ct.

This 18k white gold diamond necklace contains 28 round brilliant cut diamonds with a total weight of 5.40 ct.

This 18k white gold diamond necklace contains 7 round brilliant cut diamonds weighing 1.00 ct.

This 18k yellow gold necklace is 11.5 mm wide and comes in 16, 18, and 20 inch lengths.