Separation of Natural and Artificially Colored Diamonds
Got diamonds? No problem. The AGTA Gemological Testing Center can identify the nature of the apparent color, or lack of color, in a diamond. UV/visible low temperature spectroscopy is used to analyze colored diamonds and to determine if the color is natural or due to artificial irradiation. The AGTA GTC's Raman micro-spectroscopy unit is employed to examine colorless diamonds that are suspected of being decolored by High Pressure High Temperature (HPHT) treatment.
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Sample AGTA GTC Colored Diamond Identification Report. Click on the report for a larger image. |
Sample AGTA GTC Diamond Color Type Report. Click on the report for a larger image. |
A full listing of the AGTA Enhancement Disclosure Requirements can be found here:
Other Reports
The AGTA Gemological Testing Center offers a full range of gemological services, including the following listed below:
- Colored Gemstone Reports
- Origin Reports
- Colored Diamond Reports
- Emerald Reports
- Pearl Reports
- Padparadscha Color Analysis
- Pairaiba Color Analysis
For our current fee schedule, see the following links:
- Fee Schedule (download this in PDF format)
- AGTA Member Fee Schedule (download this in PDF format)
- AGTA Associate Member Fee Schedule (download this in PDF format)
- Not an AGTA member? Click here for details on how to join
