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

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

Product ID: 3228232

💡180° multi-view LED display for versatile readability

📏0.6mm thinnest retractable probe tip for precision

🔋3 AAA battery-powered for cordless freedom

₨183480

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Description

💎 Test smarter, not harder — the ultimate all-in-one gem detective!

DUAL HANDED DISPLAY - 180-degree LED screen adapts for right or left-handed users, minimizing testing errors
PRECISION PROBE TIP - Industry’s thinnest 0.6mm retractable tip ensures accurate readings on stones as small as 0.02ct
ERGONOMIC PORTABLE - Rubberized anti-slip grip and lightweight design for effortless handheld use anywhere
ALL IN ONE GEMSTONE TESTING - Seamlessly identify diamonds, moissanites, and simulants with one device
BATTERY POWERED CONVENIENCE - Operates on 3 AAA batteries for reliable, cordless operation on the go

The Presidium Multi Tester III (PMuT III) is a portable, battery-powered instrument designed to test colorless diamonds, moissanites, and diamond simulants with precision. Featuring the industry’s thinnest 0.6mm retractable probe tip and a 180-degree multi-view LED display, it offers ergonomic handling and versatile readability for professionals and enthusiasts alike. Calibration is required for optimal accuracy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₨183480

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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

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Best Sellers Rank	#54,288 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #15 in Jewelry Diamond Testers
Customer Reviews	3.7 out of 5 stars 412 Reviews

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

Description

Specifications

Common Questions