Necklace composed of a row of cultured pearls, set with a central motif of an octagonal emerald in a double surround of old cut diamonds. Length : 42cm. Gross weight: 42.2g. Dimensions of the emerald: 12,3 x 10 x 6,2mm. Origin : Colombia. It is accompanied by a certificate of Gem Paris (Parisian laboratory of gemmology) indicating modification by moderate impregnation of oil not appreciably affecting the aspect of the stone.