There are many instruments on the market today that jewelers can use to ensure the integrity of the diamonds they’re selling to consumers. However, there isn’t one single machine that is capable of testing for everything. For example, if you use a regular diamond tester to detect lab-grown stones, the synthetics will still test as a diamond since they are physically and chemically identical to their naturally occurring counterparts. In the segment below, we’ll break down some of our newest and bestselling testers and give you some insight on function and use.

TesterWhat does it detect?Why is it a must have?Cost

Gemlogis Lapis One
Diamond, Moissanite
(including Forever One),
Simulant, and Metals
Uses “visible violet light”
technology to detect Forever
One Moissanite

Gemlogis Ciel One
Diamond, Moissanite
(including Forever One),
and Simulants
Works seamlessly with
Pistachio Referential
to indicate a variety
of popular gemstones

Sam by Presidium
Diamond, Moissanite (including “low electrical conductivity Moissanite), and Simulants Connects directly to PC via
OMI software for a direct recording of results that can easily be sent to customers

GemOro Testerossa

Diamonds, Moissanite (including Forever One), Sapphire, and gives Metal Alerts Programmable talking voice
alerts in 9 languages and
can be calibrated

Adamas by Presidium

Diamonds (including melee), Moissanite, and gives Metal Alerts Includes changeable tips,
which allows immediate replacement of any worn
or damaged tip

Presidium Synthetic Diamond Screener
Screens for synthetics or lab-grown diamonds (both CVD and HTHP) More cost effective than
most synthetic diamond screeners

The PhosView
Screens for synthetics or lab-grown diamonds (HTHP only) Screens melee and mounted stones $4,500  

And we can’t forget about colored gemstones. This is the Presidium Gem Indicator, the only handheld tester in the industry designed specifically for colored stones. It indicates up to 31 different types of colored stones. 56-7903; $260