ESCARD, Jean-Georges. Les Pierres Précieuses, Paris: H. Dunod & E. Pinat, 1914, 4to, 24 plates, some coloured, illustrations (a few margins lightly dampstained, a few short marginal tears), contemporary morocco-backed cloth, spine gilt in compartments. [Sinkankas 1945: "the largest and most complete general work on gemstones"]