Diamond identification

Details Diamond identification Diamond identification

1977-06-30

1978-11-14

Smith, Alfred E.

Radiant energy

Coded record and readers; invisible radiant energy type

250273, 250275, 356 30, G01N 2100, G01N 2320, G21K 100

Patent

active

041257707

ABSTRACT:
A method of determining whether a diamond is the same as or different to a known diamond characterized by the steps of producing one or more records of internal defects of the diamond using X-ray topography and comparing the record or records so produced with a similar record or records produced from the known diamond.

REFERENCES:
patent: 1799604 (1931-04-01), Read
patent: 3792269 (1974-02-01), Grienauer
patent: 3947120 (1976-03-01), Bar-Issac et al.
Kohn, J. A., "Diamond, Natural and Synthetic: X-Ray Studies," Encyclopedia of X-Rays and Gamma Rays, Edited by George L. Clark, Reinhold Publishing Co., New York, 1963, p. 231.
Lange, A. R., "Topography, X-Ray Diffraction," Encyclopedia of X-Rays and Gamma Rays, Edited by George L. Clark, Reinhold Publishing Co., New York, 1963, p. 231.
Spencer et al., "Camera for X-Ray Diffraction Topography," Review of Scientific Instruments, vol. 34, No. 12, Dec. 1963, pp. 1420-1422.

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