The remarkable natural colours of the Constellation rainbow diamond necklace are captivating. The delightful drop of diamonds features a 0.07 carat fancy green diamond sparkling above a 0.03 carat 6PR Argyle pink diamond and a 0.01 carat BL1 Argyle blue diamond. The diamonds are bezel-set in 18 karat yellow and rose gold and the pendant slides on its 18 karat yellow gold chain. Matching earrings available.