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.

Desertcart Logo

Deliver to USA

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔧 Elevate Your Gemstone Game!

PRECISION TESTING - Industry’s thinnest probe for accurate results.
DUAL FUNCTIONALITY - Tests both diamonds and moissanites effortlessly.
ERGONOMIC EXCELLENCE - Designed for comfort with a rubberized grip.
PORTABLE CONVENIENCE - Lightweight with a handy carrying case.
USER FRIENDLY DISPLAY - Clear 180° view for all users.

The Presidium Multi Tester III is a cutting-edge handheld device designed for gem enthusiasts and professionals alike. With its ergonomic design, retractable 0.6mm probe tip, and dual testing capabilities for colorless diamonds and moissanites, it ensures precision and ease of use. The 180-degree LED display enhances readability, making it suitable for both right and left-handed users. Lightweight and portable, it comes with a convenient carrying case for on-the-go testing.

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

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.

How is product pricing calculated?+

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.