Diamond or gemstone marking by plurality of grooves

Details Diamond or gemstone marking by plurality of grooves Diamond or gemstone marking by plurality of grooves

B - Operations, Transporting

44

B

B44B 7/00 (2006.01) G02B 21/00 (2006.01)

Patent

CA 2316957

A method and apparatus for forming a mark on the surface of a diamond or gemstone, the mark consisting of a plurality of grooves (10) which do not detrimentally affect the clarity grade of the diamond or gemstone, and which exhibit a highly diffractive effect under certain illumination and magnification conditions. An apparatus and method for viewing such a mark is also described.

L'invention concerne un procédé et un appareil pour la formation d'une marque à la surface d'un diamant ou d'une pierre précieuse, ladite marque consistant en plusieurs rainures (10) qui ne nuisent pas au degré de pureté du diamant ou de la pierre précieuse et qui ont un effet hautement diffracteur dans certaines conditions d'éclairage et de grossissement. Un appareil et un procédé pour visualiser ladite marque sont également décrits.

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