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Reviews (2)

Jun 09, 2017
Good lightweight 365 nm UV
It is quite good, but also gives a lot of visible light. For that reason only "okay". With an extra filter it is perfect.

Jan 20, 2016
Gemstone refracometer
It does what is expected to do. Very good for the price you pay.
It is not as accurate as the expensive lab-apparatus that can be bought, but for simple testing it is quite good.