Moissanite tester by GemTrue (Moissanite Plus)

Summary Must be used in combination with a diamond tester,  i.e. if a simple (thermal conductivity) diamond tester says the stone might be diamond or Moissanite (you won't know which!), test it on this to see if it's Moissanite.   Accuracy / Guarantee A 'Moissanite' reading on this tester indicates that there's a probability that the stone is Moissanite. It is not guaranteed, the latest Moissanites will show up as diamond on this tester and most synthetic diamonds show up as Moissanite. In addition, the slightest layer of grease on the stone (e.g. by touching it with your finger) will give incorrect results.  All testers have their limitations, see our article about how to choose a diamond tester. To see an article all about Moissanite and Moissanite-testing, click here. Details 7¼ X 1¼ X 1 inches. 180X30X25mm. Takes one 9v PP3 battery (supplied).  Disclaimer All testers  must be used in conjunction with the user's skill, knowledge and experience. Under no circumstances shall QUICKTEST be liable for direct or indirect loss sustained in connection with any item. Nothing is 100% accurate, you must understand the limitations of any tester you buy. We also suggest you regularly test known samples to check for any obvious faults. Full support given for items you buy from QUICKTEST. Alternatives The testers below are to distinguish diamond from non-diamond (simulant/imitation); they do not include the very specialist testers that distinguish natural diamond from synthetic diamond, see the ARI, ARETE and APEX. "Synthetic" is a scientific term meaning 'made by man in a factory/laboratory to the same formula found in nature' (read all about it).  Model Tests mounted stones [1] Tests  Diamond Tests  Moissanite Tests Ruby /  Sapphire Other stones Diamond selector II  (DT-DS) (cheap but works most of the time) ✔ ✔ Shows up as diamond ✘   No reaction on non-diamond Diamond Experior (best diamond-only tester) ✔ ✔ Shows up as diamond ✘ Non-diamond reads 'Other Stone' Multi tester. Experior by Gemtrue (MULTI-EXP) ✔ ✔ ✔ ✔   No reaction on other stones SAM multi-tester (MULTI-SAM) ✔ ✔ ✔ ✔ Non-diamond reads ‘simulant’ Handheld presidium gem tester (GEMTEST-PGI) ✔ ✔ Shows up as diamond ✔ 31 stones Standard Presidium (GEMTEST-P2) ✔ ✔ Shows up as diamond ✔ 17 stones Presidium Duo gem tester (GEMTEST-DUO-II) [2] ✔ ✔ ✔ [3] Digital refractometer by Presidium (REFRACT-DIGI-PRESID) ✘ ✔ ✔ ✔ 55 stones Refractometer (optical not electronic) (Refract-L) ✘ ✘ ✘ ✔ Hundreds of stones [4] [1] All testers test loose stones but not all can test mounted (set in jewellery) stones. [2] The probe / analogue meter will test mounted stones, the digital meter will only test loose stones. [3] The probe / analogue meter: 17 stones; the digital meter: 40 stones. [4] Skill and practice is required to use an optical refractometer, instructions are not included, see any textbook about gemmology…or the internet.