Testing for CVD (Chemical Vapor Deposition) diamonds involves several methods, ranging from simple visual inspections to advanced laboratory techniques.
4 Essential Methods Explained
1. Check the Diamond's Grading Report
The most straightforward method is to check the diamond's grading report.
This report should indicate the growth process of the diamond.
2. Observe Unique Characteristics
CVD diamonds may exhibit unique characteristics such as "strain lines" under magnification.
They may also show distinctive fluorescence colors like red under UV light.
However, these features are not easily visible to the naked eye and require specialized equipment or expertise.
3. Use Advanced Laboratory Techniques
For a more definitive identification, specialized gemological laboratories use advanced equipment and techniques.
These include spectroscopy, microscopy, and luminescence tests under shortwave ultraviolet light.
4. Verify Certifications
CVD diamonds are graded and certified by renowned labs such as GIA and IGI, similar to natural diamonds.
These certifications provide detailed information about the diamond's characteristics, including whether it is lab-created via CVD or HPHT (High Pressure High Temperature) methods.
It is crucial to ensure that any CVD diamond purchased is accompanied by a GIA or IGI certificate, which confirms its origin and any post-growth treatments it may have undergone.
Continue exploring, consult our experts
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