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US 8,134,694 B2Granted
Detection of chemical vapor deposition grown diamond
AssigneeApollo Diamond Gemstone Corporation
InventorsRobert C. Linares, Patrick J. Doering
Life of this patent
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Abstract
Diamonds may be identified as grown by the use of chemical vapor deposition. One or more diamonds may be placed on a surface and exposed to short wavelength light. Diamonds that fluoresce red may be identified as grown by the use of chemical vapor deposition. In some embodiments, the diamonds are cooled prior to exposure to the short wavelength light.
Claims16
A method comprising:
- placing multiple diamonds on a surface;
- exposing the diamonds to short wavelength light;
- identifying diamonds that fluoresce red;
- and
- cooling the diamonds below room temperature prior to exposing the diamonds to short wavelength light.
2 more elements
A method comprising:
- placing multiple diamonds on a surface;
- exposing the diamonds to short wavelength light;
- cooling the diamonds below room temperature prior to exposing the diamonds to short wavelength light;
- identifying diamonds that fluoresce red;
- and
- sorting the diamonds as a function of red fluorescence.
3 more elements
A method comprising:
- placing multiple diamonds on a surface;
- cooling the diamonds significantly below room temperature;
- exposing the diamonds to short wavelength light;
- identifying diamonds that fluoresce red as diamonds manufactured using chemical vapor deposition;
- using a spectrometer to detect doublet emissions when the diamonds are exposed to short wavelength light to confirm that diamonds that fluoresce red are manufactured.
2 more elements
Dependencies are inferred from the claim text.