Method of producing gemstone quality topaz

Details Method of producing gemstone quality topaz Method of producing gemstone quality topaz

1994-09-12

1995-12-19

Anderson, Bruce C.

Radiant energy

Irradiation of objects or material

G21G 500, A61N 500

Patent

active

054770556

ABSTRACT:
Gemstone quality topaz is produced by a procedure which involves irradiating the topaz with fast neutrons at elevated temperature to an exposure level of at least about 10.sup.17 cm.sup.-2 followed by irradiation with electrons or gamma rays.

REFERENCES:
patent: 3616357 (1971-10-01), Haynes
patent: 4749869 (1988-06-01), Fournier
patent: 5084909 (1992-01-01), Pollak

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