Properties of Gem Varieties of Minerals; A Compilation of the Data of Gemological Authorities. Printed by order of the Board of Governors of the Gemological Institute of America in memory of its second president, Edward Wigglesworth.

Carlsbad CA: the institute, 1948. Ring_bound. Card-file reproducing the maestro's personal reference cards, each 5.5x8.5 inches, unpaginated, printed rectos only, the group ring-bound in small but massive specially-titled 6x9.5 inch binder. The item appears unused and unmolested, except for a pencilled ownership on the title card, perhaps a hundred separate entries all told. Binder has collected some dust and a few rust spots, but a very good copy.

Cat.No: 187681

Price: $22.00