Jewelry › 18k white gold round diamond riviera necklace 33.80ctw. 36". Image 1 of 1 18k white gold round diamond riviera necklace 33.80ctw. 36". $117,840.00 18k white gold graduated riviera necklace featuring 33.80ct of round diamonds. 36 inches.RT65833All weights are estimated Add To Cart Added! 18k white gold graduated riviera necklace featuring 33.80ct of round diamonds. 36 inches.RT65833All weights are estimated You Might Also Like 14k white gold round diamond riviera necklace 11.25ctw 14k white gold round diamond riviera necklace 15.46ctw Mikimoto 18k yellow gold round diamond riviera necklace 5.00ct 14k white gold round diamond riviera necklace 9.46ctw 14k white gold round diamond riviera necklace 15.10ctw