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.

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💎 Test with confidence, impress with certainty.

COMPACT SLEEK DESIGN - Professional black finish fits your modern toolkit
BATTERY POWERED CONVENIENCE - No cords, no hassle—test anywhere, anytime
ULTRA LIGHTWEIGHT PORTABLE - Carry confidence in your pocket at just 97 grams
PRECISION DIAMOND CZ TESTER - Instantly verify authenticity with trusted accuracy
TRUSTED SINGAPORE ENGINEERING - Reliability and quality from a global innovation hub

The Precidium Multi-Tester II (Model PMuT III) is a sleek, battery-powered device designed to accurately distinguish diamonds from cubic zirconia. Weighing only 97 grams and measuring 20.1 x 8.4 x 5.9 cm, this portable tester offers professional-grade precision in a compact, stylish black casing, engineered in Singapore for reliable performance on the go.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Model Number	PMuT III
Package Dimensions	20.1 x 8.4 x 5.9 cm
Color	Black
Power Source	Battery Powered
Package Weight	0.17 Kilograms
Batteries Required	No
Batteries Included	No
Brand Name	PRESIDIUM
Country of Origin	Singapore
Item Weight	97 Grams

Precidium Multi-Tester II

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Specifications

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