OTi (by Presidium) for diamonds (natural & synthetic) + non-diamond + Moissanite Magnifier Style_Hands free - brightest for 2 hours

- brightest for 2 hours (1 hour at its very brightest then 1 hour not quite so bright)

It is Aplanatic-achromatic (distortion-free right the very edge

) - the reading will drift up and down by 0

5 inches) diameter lens

OTi (by Presidium) for diamonds (natural & synthetic) + non-diamond + Moissanite Magnifier Style_Hands free - brightest for 2 hoursSummary The Oti is a combined standard (thermal) tester for diamond non diamond, plus the latest technology (UV absorption) to distinguish natural diamond from synthetic diamond, and it also tests for Moissanite. One probe, one test, the onboard computer works out the answer. Instruction manual (pdf download) Video (youtube) carrying out the test Videos (youtube) everything you need to know (7 videos, from 59 secs, to 1mn 45 secs) Detail Tests for: