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 Gem Tester II PGT

Product ID: 263476675

Details

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

✅CE & RoHS certified

📏Compact 19.8x11.4x9.7 cm

🔋Battery powered (2 AA)

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C$35893

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Description

💎 Test Like a Pro, Anywhere You Go!

TRUSTED BY THOUSANDS - 4.2-star rating from over 1,200 users—join the expert community.
PRECISION IN YOUR PALM - Sleek, compact design fits perfectly in any professional toolkit.
RELIABLE BATTERY POWER - Operates on 2 AA batteries for cordless, on-the-go gem testing.
ENGINEERED IN SINGAPORE - Crafted with precision and durability from a global innovation hub.
CERTIFIED QUALITY ASSURANCE - CE Marked and RoHS compliant for trusted, safe performance.

The Presidium Gem Tester II PGT is a compact, battery-powered conductance meter designed for precise gem identification. With a sleek black design, CE and RoHS certifications, and a strong user rating, it offers reliable performance for professionals and enthusiasts alike. Although discontinued, its Singaporean engineering and trusted brand legacy make it a must-have for accurate gem testing on the move.

Specifications

ASIN	B000TD3G8Q
ASIN	B000TD3G8Q
Batteries	2 AA batteries required.
Brand Name	Presidium
Color	Black
Customer Reviews	4.1 4.1 out of 5 stars (1,232)
Customer reviews	4.1 4.1 out of 5 stars (1,232)
Date First Available	24 October 2013
Is Discontinued By Manufacturer	Yes
Item Dimensions	19.8 x 11.4 x 9.7 centimeters
Item model number	PGT-II
Manufacturer	Presidium
Manufacturer	Presidium
Measurement Type	Conductance Meter
Model	PGT-II
Part Number	PGT/CSE
Power Source	Battery Powered
Product Dimensions	19.81 x 11.43 x 9.65 cm; 440 g
Specification Met	CE Marked, RoHS Compliant
Style Name	compact
UPC	798804941239 730792705646
Unit Count	1.0 Count
Upper Temperature Rating	51 Degrees Celsius

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C$35893

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered 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 Nicaragua.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 months ago

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Received my product in pristine condition. Great service overall.

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