Journal · By Our Bench Jewelers
Does Moissanite Pass a Diamond Tester?
Published December 31, 1969 · Written by the Holycome atelier team, Wuzhou China
Single-thermal-conductivity diamond testers will read moissanite as "diamond" because moissanite conducts heat similarly. Multi-testers that measure electricity will flag moissanite immediately, because it conducts electricity where diamond does not.
This is not a flaw — it is a physical property. If you need a stone that passes every test, you want a lab-grown diamond with a GRA/IGI certificate, not moissanite.