Sapphire, Diamond, 18k Yellow Gold Pendant Necklace. Featuring one round shaped sapphire cabochon measuring approximately 16.2 mm, accented by thirty-nine full-cut diamonds weighing a total of approximately 0.15 cttw., set in an 18k yellow gold mounting, suspended from an 18k yellow gold chain, forming an 18 inch pendant necklace. {Gross Weight: 5.7 dwts}