OTi (by Presidium) for diamonds (natural & synthetic) + non-diamond + Moissanite Magnifier Style_Hands free if a simple (thermal conductivity)

if a simple (thermal conductivity) diamond tester says the stone might be diamond or Moissanite (you won't know which

5 inches) diameter lens

) - the reading will drift up and down by 0

It is achromatic (distortion-corrected) and aplanatic (colour-corrected) and coated (to prevent reflections

to the non-expert Colour Grade D will probably look the same as Colour Grade J

OTi (by Presidium) for diamonds (natural & synthetic) + non-diamond + Moissanite Magnifier Style_Hands free if a simple (thermal conductivity)Summary 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: