A platinum sapphire onyx and diamond necklace, featuring an approx. 1.70ct round cut fine dark blue sapphire surmounting a bar drop set with 7 round brilliant cut diamonds above an 11 mm pendeloque onyx drop on a fine cable link chain with an 18ct white gold clasp set with 2 single cut diamonds 1 missing, length with drop 44 cm, wt. 4.82g.