how do you calibrate it?

Calibration is not needed as far as I know

Placing on diamonds and having no response, what does that mean?

I have used this unit and had the same response on known diamonds. Sometimes the stone is dirty and needs a cleaning. This can throw off results. Also, my unit is getting returned when I have a suitable replacement. It sometimes takes 3 or more tries to get it to register. Clean the stone and try touching it with a firm but not point grinding pressure a few times and if it doesn't work try another tester. Assuming of course you know the diamond is real.

How can I get a replacement tip?

You can get it replaced from manufacturer, fill out the return form.

Multi Tester Iii Pmut Iii All In One Instrument Testing

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

5073 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Morocco.

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Description

💎 Don’t just test gems—own the power to authenticate brilliance anywhere!

PORTABLE READY TO GO - Lightweight with a handy carrying case—test anywhere, anytime.
ERGONOMIC ANTI SLIP GRIP - Designed for effortless handling during long testing sessions.
ALL IN ONE PRECISION TESTER - Seamlessly identify diamonds and moissanites with one sleek device.
360 LED DISPLAY VISIBILITY - Multi-angle screen ensures clear readings for right or left-handed pros.
ULTRA THIN PROBE FOR MICRO GEMS - Industry’s thinnest 0.6mm retractable tip tests stones as small as 0.02ct.

The Presidium Multi Tester III (PMuT III) is the world’s first all-in-one handheld instrument that accurately tests both colorless diamonds and moissanites. Featuring the industry’s thinnest 0.6mm retractable probe tip, it reliably tests stones as small as 0.02ct. Powered by 3 AAA batteries and equipped with a 180-degree multi-view LED display, it offers ergonomic handling and portability with a rubberized grip and carrying case, making it an essential tool for jewelry professionals and enthusiasts alike.

Specifications

ASIN	B004QYR8U6
Best Sellers Rank	#91,488 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #31 in Jewelry Diamond Testers
Customer Reviews	3.7 3.7 out of 5 stars (410)
Department	womens
Item Weight	3.42 ounces
Item model number	PMuT III
Manufacturer	Presidium Instruments LTD
Product Dimensions	3.4 x 2.4 x 8 inches

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5073 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Morocco.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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

Description

Specifications

Common Questions