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Summary
Presidium are acknowledged as THE premier manufacturer of diamond and gem testers, their testers are most beautifully designed.
The Presidium Multi Tester III tests for diamond, and distinguishes diamond from on Moissanite (a manmade stone that registers 'diamond' on most diamond testers).
Is this better than the "multi-exp" (Multi tester for diamond, Moissanite, ruby and sapphire. Experior by Gemtrue) ?
In my opinion, each is as good as the other, there really isn't anything to choose as regards performance. As regards design, I think the Presidium is nicer, it's sleeker, it's "cool". As regards price, it's expensive.
My conclusion: if you want the most prestigious make, the nice-looking, and money is no object (this really is not a lot for any serious company to spend on such an essential tester) - then why not go for this one? Otherwise stick to the Experior by Gemtrue.
To read the article about diamond testing,
Details
Dimensions: 6¼"X1½"X¾" 155X38X20mm
Accessories: stone-holder, heavy duty carrying pouch, battery.
Power: three AAA batteries (supplied)
Guarantee: 1 year
Reliability / Guarantee
Returns under guarantee: one year
Returns rate (those that are returned to us during the guarantee period): none. (But these are slow sellers, we've only ever sold a couple of dozen).
Returns under guarantee: We import this directly from the manufacturers, we have a good relationship with them, if an item breaks down they will change it for us providing they are 100% certain it is faulty. Therefore, if it is definitely faulty, we'll send you a new one immediately, but if the fault is intermittent, we'll send it back to Singapore for evaluation, which will take 3 to 4 weeks. Before returning an item please check the trouble-shooting guide - if, after reading it, you are quite certain it is faulty, return it to us.