ARCUS diamond tester (also tests Moissanite, ruby, sapphire) - by Gemtrue Capacity_Over 2000g or white light

or white light

by stamp and coin dealers

avi format

as designed at the Chelsea College of Science and Technology in 1934

ARCUS diamond tester (also tests Moissanite, ruby, sapphire) - by Gemtrue Capacity_Over 2000g or white lightSummary The ARCUS is absolutely the most accurate of all* the low cost diamond tester; it is the only 'simple' tester that isn't fooled by our own selection of 'difficult' stones. This is due to its exceptional built in UV light which detects the latest low conductivity Moissanites; most* other testers show these Moissanites to be 'diamond'. * excluding the specialist synthetic diamond testers which cost between 750. 00 and 1000. 00. Tests for diamond