What is the best presidium model?

I have the colored stone estimator model and like it very well. The duo meter is good for follow-up testing of colored stones,also. The main thing to remember is that you have to make several tests to verify a gemstone properly, such as a refractometer, etc. Presidium is top of the line.

is there one now with a moissanite tester?

Yes that will the presidium duo model we have it available starting at 349

The red light won't stop flashing to indicate the tester is ready for calibration. What can I try to reset it?

As you stated, the Tester is ready for calibration. Please follow the calibration instructions in the little manual or go to the Presidium website. Good Luck!!!

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💎 Test Like a Pro, Anywhere, Anytime!

POWER THAT LASTS - Runs on 2 AA batteries (not included) for reliable, cordless operation—freedom to test on the go.
LIGHTWEIGHT PORTABLE - At just 490 grams, it’s easy to carry without compromising durability or performance.
PRECISION IN YOUR PALM - Compact design fits effortlessly on your desk or in your toolkit, making gem testing seamless anywhere.
ENGINEERED FOR ACCURACY - Crafted with meticulous precision to deliver trustworthy gem identification every time.
SLEEK PROFESSIONAL AESTHETIC - Modern black finish and streamlined style that complements any professional setting.

The Presidium Gem Tester II PGT is a sleek, compact, and lightweight battery-powered device designed for precise gem identification. Weighing only 490 grams and powered by 2 AA batteries, it offers portability and accuracy in a professional-grade tool tailored for gemologists and jewelry experts.

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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.

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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.

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.

$493

Duties & taxes incl.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

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

3 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Manufacturer	Presidium
Part number	PGT/CSE
Item Weight	490 g
Product Dimensions	19.81 x 11.43 x 9.65 cm; 490 g
Batteries	2 AA batteries required.
Item model number	‎PGT-II
Size	Medium
Color	black
Style	compact
Material	Other
Power source type	Battery Powered
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	Yes

Presidium Gem Tester II PGT

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