Ari synthetic-diamond tester by Presidium Magnification_Multi magnification Filter: fitted with a filter

Filter: fitted with a filter to improve ultra violet transmission

001g divisions up to 50g

for counting small components (must all be the same weight)

it's so easy to focus and to use

Although our survey (see comments from customers below) indicates that a pen-probe should last between 3 and 18 months

Ari synthetic-diamond tester by Presidium Magnification_Multi magnification Filter: fitted with a filterSummary 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