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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Presidium

Product ID: 263476675

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Details

Brand
Presidium
Power source
Battery
Style
compact
Colour
Black
Item dimensions L x W x H
19.8 x 11.4 x

⚡Fast & reliable gem detection

📏Compact & sleek design

🔋Battery powered for portability

Description

💎 Test Like a Pro, Anywhere You Go!

LIGHTWEIGHT PORTABLE - Weighing just 499g, it’s easy to carry without compromising performance.
BATTERY POWERED FREEDOM - Operates on 2 AA batteries, ensuring you’re never tethered to a power outlet.
CERTIFIED QUALITY ASSURANCE - CE Marked and RoHS Compliant for industry-standard reliability and safety.
PRECISION AT YOUR FINGERTIPS - Accurately tests a wide range of gemstones with trusted Presidium technology.
SLEEK COMPACT PROFESSIONAL - Designed to fit seamlessly into your workspace or on-the-go toolkit.

The Presidium Gem Tester II PGT is a compact, battery-powered device designed for precise gemstone identification. Weighing just under 500g and featuring a sleek black design, it offers professional-grade accuracy with portability. CE Marked and RoHS Compliant, it meets high safety and quality standards, making it an essential tool for gemologists and jewelry professionals seeking reliable, on-the-spot testing.

Specifications

Manufacturer	Presidium
Part number	PGT/CSE
Item Weight	499 g
Product Dimensions	19.81 x 11.43 x 9.65 cm; 499 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
Specification met	CE Marked, RoHS Compliant
Batteries Included?	No
Batteries Required?	Yes
Battery Cell Type	Alkaline

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