Advertising Disclosure Presidium Instruments Gem Tester Comparison - October 2025
7 Best Presidium Instruments Gem Tester In Canada
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| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional | 3  9.6Exceptional | 4  9.5Excellent | 5  9.3Excellent | 6  9.1Excellent | 7  8.8Very Good |
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ModelPresidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones | Model Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones | Model JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Jewellery Tester | Model Presidium Multi Tester III (PMuT III) All-in-One Handheld Instrument for Testing Diamonds, Moissanites and Diamond Simulants | Model PRESIDIUM DIAMONDMATE-C ELECTRONIC DIAMOND TESTER | Model Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones | Model Best Version Diamond Tester and 60X LED Magnifying Glasses Jeweler Tool Kit Combo，for Novice and Expert - Diamond Selector 9V Battery Included |
BrandPRESIDIUM | Brand PRESIDIUM | Brand JZK | Brand PRESIDIUM | Brand PRESIDIUM | Brand PRESIDIUM | Brand Molo |
Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews | Reviews  |
Tech Specs | ||||||
customer reviews4.3 4.3 out of 5 stars 339 ratings 4.3 out of 5 stars | customer reviews 4.1 4.1 out of 5 stars 936 ratings 4.1 out of 5 stars | customer reviews 3.9 3.9 out of 5 stars 2, 062 ratings 3.9 out of 5 stars | customer reviews - | customer reviews 4.1 4.1 out of 5 stars 170 ratings 4.1 out of 5 stars | customer reviews 3.7 3.7 out of 5 stars 36 ratings 3.7 out of 5 stars | customer reviews 4.2 4.2 out of 5 stars 148 ratings 4.2 out of 5 stars |
item weight- | item weight 508 g | item weight 90 g | item weight - | item weight 290 g | item weight 318 g | item weight 142 g |
product dimensions 11.43 x 9.65 x 19.81 cm 540 g | product dimensions 19.81 x 11.43 x 9.65 cm 508 g | product dimensions - | product dimensions 8.64 x 6.1 x 20.32 cm 97 g | product dimensions 8.64 x 6.1 x 19.05 cm 290 g | product dimensions - | product dimensions - |
batteries included No | batteries included No | batteries included - | batteries included - | batteries included No | batteries included - | batteries included - |
batteries required Yes | batteries required No | batteries required - | batteries required - | batteries required No | batteries required - | batteries required - |
material- | material Other | material - | material - | material other | material Stone | material - |
color- | color Black | color - | color - | color Black | color - | color Diamond Tester+ |
parcel dimensions- | parcel dimensions - | parcel dimensions 22.6 x 15.6 x 3.2 cm 90 g | parcel dimensions - | parcel dimensions - | parcel dimensions 20.57 x 8.64 x 6.1 cm 318 g | parcel dimensions 18.2 x 10.5 x 4.2 cm 141.75 g |
Available On | Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1PRESIDIUMPresidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones
Why we love it
Compact and easy to carry.
Accurately identifies multiple gemstones.
Highly reliable and consistent performance.
Main highlights- VERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanites
- THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip
- SIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones
- INDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portable
- INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environment
-
9.7
2PRESIDIUM
Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones
Main highlights- VERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanites
- THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip
- SIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones
- INDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portable
- INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environment
-
9.6
3JZK
JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Jewellery Tester
Main highlights- ★ NOTICE: * No matter what gemstone you are testing, the probe needle and the tested object must be at a 90° angle. * When testing diamond, your right index finger must keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. * Do Not test any metal. * Do Not wear glove.
- Product size: 16 * 4 * 2.2 cm. weight: 100g. Power needed: 1x 9V battery (not included). If you have any problem about the testing, please contact us, we would love to help.
- JZK Portable electronic diamond tester pen for diamond, sapphire, ruby, crystal, agate, jade, gems multi gemstone precious stones hardness test tool, Diamond tester
- Before Test: 1. Put the battery in the tester. 2. Take off the probe cap. 3. Turn on the switch. 4. Make sure only one light light up on the scale. 5. Make sure the " ready lamp" light on. 6. (If test diamond, you then need to turn on the lights number corresponding to the indoor temperature and diamond weight.). 7. (If test other gems, you'd better calibrate the probe, method: by placing the probe vertically on a glass, then adjusting the light to 5, then test the gems.)
- * If the number of lights equals or exceeds 9, and it beeps, it means the diamond is true. * If the lights is about 9 and it beeps, it means the sapphire is true. * If the number is 6.5-7, it means the agate is true. * If the number is 7-8 , it means the crystal is true. * If the number is 6-7, it means the jade is true.
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Value for money
BestChoices.com compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
