Method and apparatus for identifying gemstones, particularly diamonds
AssigneeWellborn Ltd.
InventorsAharon Yifrach, Uri Neta
Life of this patent
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Abstract
A method of identifying a gemstone, particularly a diamond by: exciting the gemstone to cause it to emit luminescence radiation according to a luminescence spectrum unique to the respective gemstone, in which the luminescence intensity uniquely varies as a function of wavelength; measuring the level of the luminescence radiation at a plurality of preselected wavelengths of its luminescence spectrum; and utilizing the levels of the luminescence radiation at the preselected wavelenths to identify the respective gemstone and to distinguish it from other gemstones.
Claims23
A method of identifying a gemstone, particularly a diamond, comprising:
- exciting the gemstone to cause it to emit luminescence radiation according to a luminescence spectrum unique to the respective gemstone, in which the luminescence intensity uniquely varies as a function of wavelength;
- uniformly distributing said luminescence radiation by a light-diffusing surface;
- measuring the level of the uniformly-distributed luminescence radiation at each of a plurality of preselected wavelengths of its luminescence spectrum;
- and utilizing the levels of the luminescence radiation at said preselected wavelengths to identify the respective gemstone and to distinguish it from other gemstones.
Apparatus for identifying a gemstone, particularly a diamond, comprising:
- exciting means for exciting the gemstone to cause it to emit luminescence radiation according to a luminescence spectrum unique to the respective gemstone, in which the light intensity uniquely varies as a function of wavelength;
- light-distributing means for uniformly distributing the luminescence radiation;
- a light-measuring system for measuring the level of the uniformly-distributed luminescence radiation at each of a plurality of preselected wavelengths of its luminescence spectrum;
- and display means for displaying a value representing the level of the luminescence radiation at the preselected wavelengths to identify the respective gemstone and to distinguish it from other gemstones.
Dependencies are inferred from the claim text.