If you have a diamond tester (a diamond-only tester) it will register 'diamond' on Moissanite (a manmade stone).
Of course, the 'good' testers ("multi-testers") will test for both diamond and Moissanite - but if you already have a diamond-only tester, you will need a Moissanite tester. Or if you haven't got any type of diamond tester, and if you want to spend as little as possible, then get a cheap diamond-only tester plus a Moissanite tester instead of a multi-tester.
To see an article all about diamond testing click here.
7¼ X 1¼ X 1 inches. 180X30X25mm.
Takes one 9v PP3 battery (supplied).
Reliability / Guarantee
Returns under guarantee: one year
Returns rate (those that are returned to us during the guarantee period): less than 5%
Returns under guarantee: Providing we're quite certain that it is definitely faulty, we will send a new one. Before returning an item please check the trouble-shooting guide - if, after reading this, you are quite certain it is faulty, return it to us.
Returns out of guarantee: not worth repairing, best to put it in the bin and buy another one.