In this guide today, we are here with our in-depth review of the best colored gemstone tester. There are plenty of choices with multiple websites and therefore difficult to choose the best one. We recommend to read the guide and choose the one that suits your need as we review products based on the various options, features, price, quality and many more . To avoid this dilemma, we recommend to read this guide and review. It gives you insider information on how to choose the best colored gemstone tester for your needs and budget.
This is the ultimate buyers guide colored gemstone tester.
The Best colored gemstone tester
1
Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones
10
Amazon.com
2
Ade Advanced Optics GL500 Gemstone Refractometer with LED Light – Professional Digital Gem Tester for Jewelry, Gemstone, Ruby, Jadeite, Sapphire, Diamond,...
9.7
Amazon.com
3
Heavy Duty Calcite Dichroscope Gemstone Tester Trichoic Pleochroic Colors Gemstone Identification Gemstones Gemological Testing Diamond Jeweler Tool Metal...
9.6
Amazon.com
4
SmartPro SPGE-I Gem Eye I Gem and Diamond Tester Smart Pro
9.2
Amazon.com
5
Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones
9.2
Amazon.com
6
Diamond Tester Jewelry Gem Stone Tester Moissanite Tester Professional 2pt Jewel Stone Combo Tester Kit for Diamond, Moissanite, Metal and Gemstone Selection...
8.9
Amazon.com
7
Presidium Duo Tester (PDT II) Diamond and Colored Gemstone Tester | Thermal Conductivity and Reflectivity Testing | Assisted Thermal Calibration (ATC) |...
8.8
Amazon.com
8
KooingTech RHG181 Diamond Tester, 1.30-1.81 Jewelry Refractometer, Portable Gem Tester for All Stones Refractometry Testing Tools
8.5
Amazon.com
9
Purity Testing Kit for Diamonds Gemstones Moissanites Gold Silver and Platinum Jewelry Electronic Digital Diamond Tester Machine JSP GTE
8.5
Amazon.com
10
Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection)
8.4
Amazon.com
The Best colored gemstone tester
Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones
$289.00
in stock
Amazon.com
Features
| Part Number | PGT/CSE |
| Model | PGT-II |
| Warranty | Please contact the seller directly for warranty information for this product. You may also be able to find warranty information on the manufacturer’s website. |
| Color | Presidium Gem Tester Complete Unit |
| Size | Medium |
| Edition | II |
- INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environment
- INDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portable
- THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip
- VERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanites
- SIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones. IMPORTANT TO NOTE | The calibration of this product may be affected during shipping. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.
Ade Advanced Optics GL500 Gemstone Refractometer with LED Light – Professional Digital Gem Tester for Jewelry, Gemstone, Ruby, Jadeite, Sapphire, Diamond,...
$99.99
in stock
Amazon.com
Features
| Part Number | GL500 |
| Model | GL500 |
| Color | Black |
| Is Adult Product | |
| Release Date | 2017-04-16T00:00:01Z |
- DURABLE ALL-METAL CONSTRUCTION – Built to last with a solid metal body, this gemstone refractometer ensures stability and long-term use for reliable results in professional gem testing and evaluation
- WIDE MEASUREMENT RANGE – Offers a refractive index range of 1.30 to 1.81, covering the values of most commonly tested gemstones. Essential for accurate identification of natural and synthetic stones
- LED ILLUMINATION WITH BATTERIES INCLUDED – Equipped with a built-in LED light source powered by 3 x 1.5V batteries (included), providing consistent lighting for clear readings in any lab or field environment
- INDUSTRY-STANDARD GEM TESTING TOOL – Regarded as one of the most essential instruments in gemology for verifying gem identity. Trusted by jewelers, gemologists, and appraisers worldwide for precise readings
- COMPLETE TESTING KIT INCLUDED – Comes with a polarizing filter for double refraction testing, as well as soft storage pouch to protect the unit and enhance portability during travel or on-site work
Heavy Duty Calcite Dichroscope Gemstone Tester Trichoic Pleochroic Colors Gemstone Identification Gemstones Gemological Testing Diamond Jeweler Tool Metal...
$33.90
out of stock
Amazon.com
Features
| Part Number | GDTK-43 |
| Model | GDTK-43 |
| Color | Black |
- Reveals Dichroism: Heavy Duty New Calcite Dichroscope Experience the mesmerizing of colors exhibited by gemstones , Our dichroscope helps determine if a stone is dichroic, meaning it reflects two different colors, It is very helpful in distinguishing between stones of the same color
- Axis-Specific Colors: Gemstone Dichroscope Clearly displays the true colors on each axis, you can observe the two pleochroic colors characteristic of a given direction in a doubly-refractive gem side by side, allowing you to see them separate
- Differentiate Similar Stones: Our Gemstone Identification Jeweler Tool helps you differentiate stones of the same color from one another, You can use the function of the dichroic mirror to differentiate gemstones according to their dichroic or trichroic properties for accurate evaluation and identification of gemstones, it an essential tool for gemologists and jewelers
- Predict Mixed Colors: If use Our Jewelry Gemstone Testers no dichroism is initially detected, the gemstone can be rotated for observation using a dichroic microscope in multiple viewing directions. This helps to thoroughly evaluate the gemstone for the presence of polychromy, Get a precise idea of how the colors will blend when cut into a stone
- Durable and Reliable: Gemstone Tester Made by professional craftsmen to withstand heavy use, Our color separation mirrors are also capable of identifying Trichoic Pleochroic Colors gemstones. By looking at the gemstone from three directions perpendicular to each other, you can see three distinct color
Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones
$329.00
in stock
Amazon.com
Features
| Part Number | PGI |
| Model | PGI |
- INDUSTRIES MOST TRUSTED | The only handheld tester specifically for colored gemstones; Quick results in less than 6 seconds.
- THINNEST RETRACTABLE PROBE TIP | Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone, for enhanced accuracy.
- VERSATILE AND RELIABLE | Color input function to further separate gemstones for more precise results.
- EASY TO READ | Results are on a clear digital LED screen; Tests an extended range of 31 different gemstones.
- ERGONOMIC | Sleek chrome-brushed ergonomic grip; USB port for alternative power and handheld for convenience.
SmartPro SPGE-I Gem Eye I Gem and Diamond Tester Smart Pro
$269.00
in stock
Amazon.com
Features
| Part Number | Does Not Apply |
| Model | SPGE-I |
| Color | Black |
- High efficiency
- Industry’s thinnest probe tip (0.48mm) for testing diamonds as small as 0.01ct
- Identifies metals, simulants and diamonds instantly
- Portable tester that can be used anywhere
- No waiting time between tests
Diamond Tester Jewelry Gem Stone Tester Moissanite Tester Professional 2pt Jewel Stone Combo Tester Kit for Diamond, Moissanite, Metal and Gemstone Selection...
$107.59
in stock
Amazon.com
Features
| Part Number | DMTK-83 |
| Model | DMTK-83 |
| Warranty | 1 year manufacturer |
| Color | Black |
| Size | 168 x 31 x 21mm |
- BUILT IN METAL DETECTOR: Jewelry Diamond Testers Keep your work environment safe and secure with the built-in metal detector, which ensures that no unwanted metals or debris are left behind
- FAST WARM UP TIME: Diamond Tester Professional With a quick and efficient warm up time of only about 25 seconds, you can get to work right away and make the most of your valuable time
- AUDIBLE ALERTS: Jeweler Diamond Tool Kit The beep sound indicator lets you know when the device is ready to use, so you can stay focused on your work and not waste time waiting for it to warm up
- OPTIMAL EFFICIENCY: Our Diamond Tester Pen is designed with your efficiency in mind, so you can work quickly and effectively without sacrificing quality. Its user-friendly features and intuitive design make it the perfect choice for anyone looking to maximize their productivity
- ACCURATE AND RELIABLE TESTING TOOLS: Professional Diamond Moissanite Tester Specifically designed to quickly and easily distinguish between diamonds, moissanites, and other fake stones. It features a fine, elastic-tipped probe that is capable of testing stones as small as 2pt
- Note: Could be powered by AAA alkaline batteries, NiMH batteries or an AC power adaptor (all are not included in the set)
Presidium Duo Tester (PDT II) Diamond and Colored Gemstone Tester | Thermal Conductivity and Reflectivity Testing | Assisted Thermal Calibration (ATC) |...
$419.00
in stock
Amazon.com
Features
| Part Number | PSPDTS7 |
| Model | PDT-S7 |
| Color | Black |
| Edition | II |
- DUAL TESTING TECHNOLOGY FOR ACCURATE RESULTS | The only tester combining thermal conductivity and reflectivity measurement to distinguish diamonds from moissanite and other colored gemstones with confidence.
- ASSISTED THERMAL CALIBRATION (ATC) | Advanced ATC technology ensures consistent, reliable, and accurate readings every time for professional-grade performance.
- INDUSTRY'S THINNEST PROBE TIP (0.6MM) | Ultra-fine retractable thermoelectric probe allows testing of gemstones as small as 0.02ct with precision and constant contact pressure.
- LARGE EASY-TO-READ ANALOG DIAL | Features 15 colored gemstone indicators for quick visual identification and simplified interpretation of results.
- SIMPLE, FAST AND PROFESSIONAL OPERATION | Designed for jewelers, gemologists, pawn shops, and collectors who need dependable diamond and gemstone testing in seconds.
Purity Testing Kit for Diamonds Gemstones Moissanites Gold Silver and Platinum Jewelry Electronic Digital Diamond Tester Machine JSP GTE
$42.97
in stock
Amazon.com
Features
| Part Number | GTEDT |
| Model | GTE DIAMOND TESTER |
| Warranty | 1 YEAR WARRANTY |
| Color | CLEAR |
- ALL-IN-ONE GOLD, SILVER, PLATINUM, & DIAMOND JEWELRY TESTING & APPRAISAL KIT
- FUN, FAST, AND ACCURATE! DETERMINES THE KARAT OF GOLD, SILVER, AND PLATINUM JEWELRY IN SECONDS!
- AUTHENTIC GTE 3''x6'' JEWELRY TOUCHSTONE FOR SAFE TESTING THAT WON'T DAMAGE YOUR JEWELRY
- JEWELRY TEST KIT-DIAMOND TESTER-TRIPLET MAGNIFIER
- A MUST-HAVE FOR ANYONE WHO WANTS TO INVEST IN GOLD, SILVER, PLATINUM, OR DIAMONDS!
- *BONUS* GTE ACID NEUTRALIZER QUICKLY CLEANS STONE
KooingTech RHG181 Diamond Tester, 1.30-1.81 Jewelry Refractometer, Portable Gem Tester for All Stones Refractometry Testing Tools
$77.99
in stock
Amazon.com
Features
| Part Number | KooingTechxe5f8vs3w7 |
| Model | KooingTechxe5f8vs3w7 |
- Product Parameters: Diamond tester size: approx. 13*6*3.5 cm/5.1*2.4*1.4 inches; Refractive index range: 1.30-1.81 RI; Weight: approx. 721 g; The gem tester is lightweight, compact and easy to carry
- Function: Jewelry refractometer can quickly and accurately measure the refractive index value of jewelry without damage, and can determine other optical characteristics of jewelry, is one of the most important tools to identify jewelry
- Instructions for Use: Wipe the gemstone and refractometer, apply the refraction oil on the surface of the prism, cover the gemstone flat on the surface of the prism, turn on the light source, adjust the focal length of the eyepiece, and start to observe
- Professional Manufacturing: The diamond tester is made of ABS material, which can be used for the gem is uniaxial crystal or biaxial crystal, low power consumption, and provide effective service while ensuring long term use
- Widely Used: The gem tester is suitable for measuring the refractive index of ruby, sapphire, emerald, emerald, tourmaline, crystal, diamond, zircon and other gems and solid materials
Diamond Tester, Professional Jewelers' Gemstone Detector, High Accuracy Diamond Checker Pen Professional for Jewelers, Gem Tester (Jewelry-Only Detection)
$9.99
in stock
Amazon.com
Features
| Part Number | 1 |
| Model | 20 |
| Color | Black |
| Size | Battery Powered |
- ACCURATE DETECTION : Our professional diamond tester pen (a reliable gem tester) features a sophisticated sensor for precise gemstone identification (Diamonds/Moissanite: 9+ lights + beeps; Jade: 5-6 lights; Crystal/Glass: 5-7 lights). (Jewelry-Only Detection – Not for metal/gold or gold testing kit use)
- STANDARD OPERATION : Insert battery (Gently press the wire and the cables to hold battery will secure it in place) → Power on → MUST preheat 30s (critical) → Adjust indicator to 4th mark (do not skip) → Hold back metal plate → Probe 90° perpendicular to gemstone. Reset to 4th mark before each test
- METAL DETECTION NOTE : Not for metal/gold or gold testing kit use – metal has similar thermal conductivity to diamonds (normal beeping, not a defect). Consistent with title "Jewelry-Only Detection"
- PACKAGE CONTENTS : Diamond tester pen + user manual + 9V battery + testing platform. Read the manual first to maximize accuracy with your diamond detector
- PRECAUTIONS : Avoid windy/cold conditions (15-25℃ recommended); Keep probe perpendicular to gemstone; Turn off power after using this diamond checker
- SEAMLESS SHOPPING EXPERIENCE : Useful usage guidance for this diamond tester and gem tester is available via included resources. Note: Only valid for gemstone testing—non-diamond items cause incorrect readings
- VIDEO GUIDE INCLUDED : Step-by-step operation & troubleshooting video covers preheating, calibration, perpendicular alignment, solves 90% of usage issues. Skipping any required steps may lead to inaccurate detection results
The Video Review of Best colored gemstone tester
Final thoughts
When you’re looking for colored gemstone tester, you’ll want to keep a few things in mind. First, decide what you want to use the colored gemstone tester for. Next, check the product reviews with comparision which we have listed as well. Once you’ve decided on colored gemstone tester you want to buy colored gemstone tester, look at the reputation of the manufacturer as well. You can compare prices and quality together before you make your purchase.