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Which product do you need help with?
Learn how to identify natural or CVD Diamonds
Why I am getting inconsistent results?Gemlogis testers require a certain level of user experience to handle properly: Make sure to clean the probe tip and remove oxidation Make sure to clean the surface of the gemstone to remove any grease and dirt Make sure the gemstones are at room temperature (remove from body/pocket to let it cool down) Make sure to point the probe tip at a perpendicular angle against a flat surface of the gemstone Make sure to allow the gemstone to cool down between consecutive tests Make sure to test different spots on the surface of the stones, due to the impurities on the stones, it may affect the results.
Why does moissanite indicate as diamond on some occasions?In some instances there may be a disproportional allocation of silicon carbide located on a moissanite; therefore, performing several tests on different spots (including the girdle) of the gemstone is recommended.
Can Gemlogis thermal testers detect uncut raw/uncut stone?Yes, as long as the stone has a clean & flat surface.
Will the size of the gemstone affect the test result?Yes. Smaller stones conduct less heat from the probe tip. Hence, the reading indicated may be slightly lower.
Why do blue diamond & black diamond indicate as moissanite or metal?Blue Diamond is a semiconductor due to the substitution of boron impurities in place of carbon atoms. Black Diamond is substituted with graphite or iron inclusions. Both blue and black diamond will indicate as moissanite or metal on the tester.
Why do I sometimes hear intermittent beeping when testing gemstones?Whenever the probe tip touches a metal surface, an intermittent beep will sound. This is only applicable to mounted gemstones.
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