Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants

Initially I thought this multi tester was unreliable. Turns out I was the weak link. After reading other reviews and watching the product videos, I realized I wasn’t putting adequate pressure on the stone. After being mindful of the stone cleanliness, probe angle, and pressure, I’m identifying stones with precision. This is a prograde device which does require practice and patience. I’m extremely happy with the purchase.

The Diamond Tester falls short in several key areas, making it a less reliable choice for those needing accurate gemstone assessments. Its performance is inconsistent, often failing to distinguish between diamonds and simulants effectively. This can lead to confusion and potential errors, especially when assessing valuable or delicate stones.The build quality is also lacking, with a flimsy design that feels less durable than expected. Frequent calibration issues can result in unreliable readings, requiring constant adjustments to maintain accuracy. The user interface is not as intuitive as one would hope, making the testing process more cumbersome than necessary.Additionally, the display is small and hard to read, which can be frustrating during detailed examinations. The overall functionality does not justify the investment, particularly when compared to other more reliable and accurate testers on the market.Customer support is reportedly slow to respond, which is a drawback if issues arise. For those serious about gemstone testing, it’s worth considering alternatives that offer better reliability and accuracy. Overall, the Diamond Tester fails to deliver on its promises, making it a less advisable choice for enthusiasts and professionals alike.

The testing instrument works well for what I needed. I needed it to test for Moissanite.I work for an auction house and test the gems in jewelry so that they are not misrepresented.We also auction loose gems and this is needed for this also

Good product, just make sure you center the tip from the diamonds and hold the reader 90 degrees for accurate reading

I work in a pawnshop and we use these to determine whether or not the stones are diamond moissanite or anything in between they work great

I had high hopes for the Presidium Multi Tester III as an all-in-one instrument for testing diamonds and moissanites, but it left me thoroughly disappointed. 😞First off, it's not as user-friendly as it claims to be. The instructions are complex, and it takes forever to get the hang of it. Plus, the device itself is bulky and awkward to handle.But the real letdown is its accuracy—or lack thereof. It frequently gives false readings, leaving me questioning the authenticity of my gemstones. It's a nerve-wracking experience, to say the least.Considering the hefty price tag, I expected much better performance. Unfortunately, the Presidium Multi Tester III doesn't live up to the hype. Don't waste your money on this unreliable gem-testing tool. 💔💎❌

The media could not be loaded. i was trying to communicate with the support before i give my feedback hoping to resolve my concern, this product is pricey, i was actually expecting this to be solid material not easy to crack, because whe i put the batteries in i notice how easy or crackable it is, and i notice that there is a power input that is not included in the package since its pricey, and when i used it the tip almost cut or broken coz its like softy tip metal, so i check the products manual tru barcode, so the protip is replaceable meaning for this price there should have been extra tip just incase it get damage, i should have chose the lesser pricey one they look the same but i still bought this hoping and expecting this to be worth the money,

Accurately differentiates between real and immatation diamonds and moisonite. Could be a little more solid for the price. Really hard to get a good reading. Tried to hold on an angle and that helps. A lot of my diamonds are colored which don't read on the pen. They go up to moisonite and stop. I am happy overall.