Can a diamond tester be wrong?
Yes, a diamond tester can be wrong. While high-quality diamond testers with a good reputation are unlikely to give false readings, not all testers are equal, and some can be inaccurate when testing certain types of stones. It's essential to check your tester against a known diamond before testing an unknown gemstone.
One common issue with diamond testers is their inability to distinguish between natural diamonds and lab-grown synthetic diamonds. Both have the same chemical properties, so they will test just like natural diamonds. The only way to distinguish between them is to look at their structure and composition using special techniques like spectroscopy. Luckily, there are plenty of tools out there that can do this for you, including special diamond testers with interchangeable heads (which allow you to test for more than one type of material) and laser inscription readers.
Another limitation of diamond testers is their reliance on thermal conductivity. The thermal conductivity of a diamond is about 2.5 times that of an average gemstone and about 6.5 times that of Moissanite. Diamond testers measure how well the stone conducts heat and will not always be accurate when testing other gemstones. Typically, diamond testers are only suitable for testing diamonds and/or moissanite. The only other stone that can be tested with a diamond tester is moissanite, a man-made stone that is very similar to diamonds in both appearance and properties. Diamond testers will typically test positive for diamonds or moissanite, but a few newer models can detect moissanite as well as lab-grown diamonds and natural diamonds. If you want to be certain about the results when testing for moissanite, consult your manual first or contact the manufacturer of your tester to make sure your device is fully compatible.
In conclusion, while diamond testers can be a valuable tool in determining the authenticity of diamonds, they can be wrong in certain situations. It's essential to use a high-quality tester with a good reputation, check it against a known diamond before testing an unknown gemstone, and consider using additional tools like spectroscopy or laser inscription readers to distinguish between natural and synthetic diamonds.
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