PRESIDIUM GEM INDICATOR PGI GEM TESTER USB
$506.47
In stock
Please fill in the fields below with the shipping destination details in order to calculate the shipping cost.
Description
The Presidium Gem Indicator is the only handheld tester inthe industry specifically for colored gemstones that helps to indicate up to 31different types of colored gems based on their thermal conductivity and evenfeatures a color input function that allows users to select from a range ofcommon colors, thereby narrowing down the possible results. With aneasy-to-read clear digital LED screen, this smart thermal tester also comeswith the Presidium patented replaceable probe tip technology, which ensures minimalequipment downtime.
The Presidium Gem Indicator is an enhanced and more convenient handheld version of the revolutionary Presidium Gem Tester/Colored Stone Estimator. It distinguishes between diamonds and other colored gemstones using the principles of thermal conductivity. The Presidium Gem Indicator probe consists of two linked thermometers; one which is heated electronically, while the other is cooled by the gemstone being tested. The difference in temperature creates an electrical output, which is then amplified and displayed on the new digital organic LED display.
It is simple to use, easy to maintain and quick in giving you intelligent results about your colored gemstones.
Features and Benefits:
• Differentiates between diamonds and other colored gemstones
• Tests up to 31 different types of gemstones
• Color separation function of 12 colors with user input, to
improve accuracy
• Industry’s thinnest probe tip (0.45mm) for testing gemstones
from 0.02ct
• Retractable thermoelectric tip that maintains constant pressure
against gemstone
• Patented refined changeable probe tip
• Metal buzzer alert
• Internal library database function of gemstones and their colors
• Requires just 3 AAA Batteries
• USB connection to PC for more value-added functions
Presidium Gem Indicator PGI distinguishes the following gems:
| No. | Stone Family | Stone Name |
| 1 | Glass | Glass |
| 2 | Beryl | Goshenite |
| 3 | Helidor | |
| 4 | Aquamarine | |
| 5 | Morganite | |
| 6 | Emerald | |
| 7 | Lolite | Lolite |
| 8 | Garnet(Almandine-pyrope group) | Almandine |
| 9 | Pyrope | |
| 10 | Spessartite | |
| 11 | Nephrite | Nephrite |
| 12 | Tanzanite | Tanzanite |
| 13 | Quartz | Chrysoprase |
| 14 | Tourmaline | Tourmaline |
| 15 | Paraiba | |
| 16 | Rubelite | |
| 17 | Garnet(Grossular-Andradite group) | Hessonite |
| 18 | Tsavorite | |
| 19 | Demantoid | |
| 20 | Peridot | Peridot |
| 21 | Jadeite | Jadeite |
| 22 | Quartz | Aventurine |
| 23 | Citrine | |
| 24 | Quartz | |
| 25 | Amethyst | |
| 26 | Spinel | Spinel |
| 27 | Chrysoberyl | Chrysoberyl |
| 28 | Topaz | Topaz |
| 29 | Corundum | Sapphire |
| 30 | Ruby | |
| 31 | Diamond | Diamond |
Recommended Operating Conditions
It is recommended to use the Presidium Gem Indicator in environments
at ambient temperatures of 18°C – 27°C. Calibration using the provided
calibration disk is also recommended when starting to use the product
or when using the product in different environments.
-

Bostingner Shower Jets System, 12 Inch Thermostatic Rainfall Shower System with 6 Body Spray Jets (Can All Run Together) Full Body Spray Shower System, Shower Valve Included, Brushed Nicke
$538.99 Add to cart -
Sale!

Southbend 436D-3C 36″ Ultimate Restaurant Gas Range w/ 36″ Charbroiler & Standard Oven
Original price was: $11,787.60.$10,270.70Current price is: $10,270.70. Add to cart -

Tuya Zigbee/Bluetooth Track Curtain Robot Tuya Smart Rail
Price range: $39.71 through $54.64 Select options This product has multiple variants. The options may be chosen on the product page -
Sale!

Motorola razr+ | 2024 | Unlocked | Made for US 12/256 | 50MP Camera | Spring Green
Original price was: $1,099.99.$879.99Current price is: $879.99. Add to cart -

Weibath Whirlpool Bathtub 2 Person Jetted Bathtub 71″ Massage Whirlpool Tub with 18 Water Jets+20 Air Jets,3 Sided Apron White Chromatherapy LED Jet Tub
$3,299.99 Add to cart -
![LANRUO GPD Win Max 2 2025 [AMD Ryzen AI 9 HX 370-32GB+2TB] 10.1 Inches Mini Handheld Win 11 PC Video Game Console Laptop 2560X1600 Touchscreen Tablet PC](https://bymatics.com/wp-content/uploads/2025/05/71Pv4JijFOL-300x300.jpg)
LANRUO GPD Win Max 2 2025 [AMD Ryzen AI 9 HX 370-32GB+2TB] 10.1 Inches Mini Handheld Win 11 PC Video Game Console Laptop 2560X1600 Touchscreen Tablet PC
$1,759.95 Add to cart



































Reviews
There are no reviews yet.