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.

Presidium Multi Tester Iii | Desertcart Colombia

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

Help Track order

Account Cart

COP 2797307

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

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Description

💎 Test Smarter, Shine Brighter – The Ultimate Gemstone Verifier

DUAL DETECTION POWER - World’s first tester to identify both colorless diamonds and moissanites in one sleek device.
ERGONOMIC PORTABLE - Rubberized anti-slip grip with lightweight design and carrying case for effortless, on-the-go testing.
RELIABLE CONSISTENT - Retractable probe guarantees consistent pressure for accurate, trustworthy gemstone verification every time.
USER FRIENDLY DISPLAY - 180-degree multi-view LED screen ensures clear readings for both right and left-handed professionals.
PRECISION AT A MICRO SCALE - Industry’s thinnest 0.6mm retractable probe tip for testing diamonds as small as 0.02ct.

The Presidium Multi Tester III is a cutting-edge handheld device engineered to instantly distinguish between colorless diamonds and moissanites using advanced thermal and electrical detection technology. Featuring the industry’s thinnest 0.6mm retractable probe tip, it accurately tests even the tiniest stones down to 0.02 carats. Its ergonomic design, anti-slip grip, and 180° multi-angle LED display make gemstone verification effortless and precise for professionals on the move.

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COP 2797307

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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ASIN	B004QYR8U6
Best Sellers Rank	#37,512 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #174 in Multi Testers
Item model number	PMuT III
Manufacturer	Presidium
Product Dimensions	8.64 x 6.1 x 20.32 cm; 97 g

Presidium Multi Tester Iii

Description

Specifications

Common Questions