V.C.A., Solitaire ring in platinum 900 MM, set... Lot 8

V.C.A., Solitaire ring in platinum 900 MM, set with an old cushion-cut diamond weighing about 4.50 carats, presumed to be "cou- leur I - J. qualité VS2", two shocks-chips on the roundel, N° 1Z738CS, special order, jeweller's spring for the cut, in its VCA case, circa 1930 Size: 53/54, weight: 5,7gr. grossV.C.A,