One-Hundred carats of the first man-made diamonds produced in the pilot plant of G. E.'s Carboloy Department, Detroit, are being weighed here. J. S. Gillespie, manager of Carboloy's diamond project, weighed the industrial diamonds which have been mounted in a special plaque presented to the Smithsonian Institution in Washington today.

Digital Commonwealth — Boston Public Library

One-Hundred carats of the first man-made diamonds produced in the pilot plant of G. E.'s Carboloy Department, Detroit, are being weighed here. J. S. Gillespie, manager of Carboloy's diamond project, weighed the industrial diamonds which have been mounted in a special plaque presented to the Smithsonian Institution in Washington today.

[ca. May 1956]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Diamonds-- Diamonds

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