A diamond 'Trinity' necklace, by Cartier The tricoloured interlocking hoops set to the front with brilliant-cut diamonds, suspending a swag of tricoloured faceted cable-link chains, spectacle-set at intervals with similarly-cut diamonds, to a multi-strand backchain with similarly-set brilliant-cut diamond accents, diamonds approx. 4.70cts total, signed Cartier, numbered, maker's mark, length 54.0cm, maker's case For further information on this lot please visit Bonhams.com