Part of the Fendi dynasty, itâs perhaps not surprising that Delfina Delettrezâs has risen to the top of the jewellery echelons with her exquisite figurative surrealist designs that draw inspiration from human anatomy and nature. This 18kt yellow and white Two In One diamond necklace from Delfina Delettrez features a delicate chain, a spring-ring fastening, an adjustable fit, a round cut 0.165ct white diamond and a bar piercing with a ball at each end.