Ari synthetic-diamond tester by Presidium Magnification_Multi magnification round) and perfectly-cut in proportion

round) and perfectly-cut in proportion

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it's so easy to focus and to use

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Ari synthetic-diamond tester by Presidium Magnification_Multi magnification round) and perfectly-cut in proportionSummary The Presidium ARI is an essential tool for the experienced jeweller and professional diamond dealer, it is for testing known diamonds, to see if they are natural or synthetic (= lab grown). That means you must first test the stone on a good quality diamond tester first this is not included. If you are not an experienced jeweller or professional diamond dealer: check with a simple (but good quality) diamond tester to make sure you have a