SPERANZA Cavenago-Bignami Moneta. - GEMMOLOGIA. Pietre preziose naturali, trasparenti, semitrasparenti ed opache, perle, cammei di conchiglia, opercula, coralli, avorio, tartaruga, pietre sintetiche, imitazioni, perle di coltura (con e senza nucleo). Cenni di mineralogia generale. Metodo di analisi per le pietre preziose e le perle.

Milano, Hoepli, 1965 gr. vol. in-4 gr., pp. XLVII, 1390, leg. t. tela edit. Con 203 tavv. a colori, figure con gli spettri di assorbimento, 59 radiografie, etc...

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