18ct white gold and diamond 'C heart of Cartier' ring, 2001, designed as a continuous series of open work heart motifs, pave-set with brilliant-cut diamonds, size K, signed Cartier, 2001, numbered AD6234. Provenance: important jewels & watches, Smith & Singer (trading as Sotheby's Australia), 8 August 2018, lot 141, illustrated. Private collection, Sydney, acquired from the above