Attributed to Pierre CONROUX (1923-2003) for BOUCHERON Paris A gouache drawing on tracing paper depicting a half-set comprising a necklace and two lapel clips in rose gold, the necklace formed of a twisted mesh centered by a large element formed of the two assembled clips, in gold filins, punctuated by lines of diamonds and brilliant-cut diamonds in claw-set, one centered by a larger brilliant-cut diamond. Signed in relief on the paper. Size: 25 x 16.5 cm. Folds and tears, annotations ("careful that it falls well").