10 Best Presidium Gemstone Tester

On the lookout for an outstanding best presidium gemstone tester? Our expert team has combed through the market, carefully selecting and testing the best products available. We’ve put each best presidium gemstone tester through a series of both practical and analytical tests to provide a comprehensive understanding of their capabilities and limitations.

Our detailed reviews delve into the critical components of each product. We assess the main features, overall performance, and cost-to-benefit ratio, aiming to offer you a well-rounded and unbiased perspective. Our selection focuses on crucial factors like Performance, Simplicity of Use, and Value. We cater to a range of individual preferences and financial situations, aiming to help you find the best presidium gemstone tester that surpasses your expectations.

Editor’s Note: In March 2024, this review was updated with the latest market developments and additional product options, ensuring that our recommendations remain relevant and encompassing for your decision-making process.

Top Products for best presidium gemstone tester

# Image Product Name Price
1 Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones Buy Now – $269.00
2 Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones Buy Now – $269.00
3 Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones Buy Now – $309.00
4 Presidium Duo Tester PDT Diamond Gemstone Tester Presidium Duo Tester PDT Diamond Gemstone Tester Buy Now – $399.00
5 Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants Buy Now – $222.00 ($98.23 / 100 g)
6 Gem Portable Refractometer, RHG181 1.30-1.81 Presidium Gemstone ldentification Tester for Jewelry, Gold & Silver and Diamond, Lab Refractometers Gem Portable Refractometer, RHG181 1.30-1.81 Presidium Gemstone ldentification Tester for Jewelry, Gold & Silver and Diamond, Lab Refractometers Buy Now – $89.99
7 Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones Buy Now – $309.00
8 Presidium Gem Indicator (PGI) - Handheld Tester Presidium Gem Indicator (PGI) – Handheld Tester Buy Now – $319.00
9 THE PERFECT PART Portable Diamond Tester Tool with Gem Testing Tray & Storage Bag | Professional Audio Diamond Selector II - Gemstone Tester Pen for Jewelry, Ruby, Crystal & Precious Metals Testing THE PERFECT PART Portable Diamond Tester Tool with Gem Testing Tray & Storage Bag | Professional Audio Diamond Selector II – Gemstone Tester Pen for Jewelry, Ruby, Crystal & Precious Metals Testing Buy Now – $12.59
10 Original Presidium Electronic Diamond/Gemstone Gauge PEGG Original Presidium Electronic Diamond/Gemstone Gauge PEGG Buy Now – $289.00

1. Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Key Features:

  • 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.

Buy Now From Amazon – $269.00


2. Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Presidium Instruments Gem Tester II (PGT II) Now with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones

Key Features:

  • NOTE: The calibration may be affected during shipping. If you have issues, reach out to the seller.
  • INDUSTRIES MOST TRUSTED gemstone tester redesigned to be more compact, sturdy and portable.
  • THINNEST RETRACTABLE PROBE TIP: 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.

Buy Now From Amazon – $269.00


3. Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones

Key Features:

  • 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.

Buy Now From Amazon – $309.00


4. Presidium Duo Tester PDT Diamond Gemstone Tester

Presidium Duo Tester PDT Diamond Gemstone Tester

Key Features:

  • Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone
  • Industrys thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct
  • Large easy to read analog dial with 15 colored gemstones
  • Consistent and reliable results every time
  • Simple and easy to use

Buy Now From Amazon – $399.00


5. Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants

Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants

Key Features:

  • IMPORTANT TO NOTE: This product needs to be calibrated prior to use. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.
  • EASY TO USE DESIGN: Ergonomic handheld design with a rubberized anti-slip grip for easy handling. Light and portable with a convenient carrying case.
  • THINNEST RETRACTABLE PROBE TIP: Retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.
  • CLEAR, CONVENIENT DISPLAY: 180-degree multi-viewing LED display for easy readability for either right or left-handed use
  • ALL-IN-ONE INSTRUMENT: The world’s first tester that tests for both colorless diamonds and moissanites in a single instrument. Powered by 3 AAA batteries.

Buy Now From Amazon – $222.00 ($98.23 / 100 g)


6. Gem Portable Refractometer, RHG181 1.30-1.81 Presidium Gemstone ldentification Tester for Jewelry, Gold & Silver and Diamond, Lab Refractometers

Gem Portable Refractometer, RHG181 1.30-1.81 Presidium Gemstone ldentification Tester for Jewelry, Gold & Silver and Diamond, Lab Refractometers

Key Features:

  • 【Professional Design】This refractometer is specially designed to measure the refractive index of gemstones and solid materials. The minimalist design style makes it very suitable for use.Considered by many to be the most important of all gem testing instruments.
  • 【High Quality】Quality all metal construction, low battery consumption can be used for a long time.Approved by strict quality and safety standards and is trouble-free to use.
  • 【Package Contents】Built-in LED flashlight, 30x jewelers loupe in silver housing, one of the most important gemstone identification tools.Quality gemological refractometer with a bottle of 3ML jewelry identification special refraction oil.
  • 【Product Advantages】The refractometer is stable in performance, High precision and easy operation, lightweight and compact, easy to transport and carry.
  • 【Professional Functions】Identify single and double gems quickly and precisely.Measurement range of 1.30 – 1.81.Helps identify diamonds, moissanite and colored gems, speeds up the identification of gems in the package.Gemstone Refractometer is the most important and powerful tool for identifying and authenticating polished gemstones and semi-precious stones, as well as for observing the optical properties and structure of precious stones.

Buy Now From Amazon – $89.99


7. Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones

Presidium Instruments Gem Indicator (PGI) Handheld Tester for Identifying Diamonds and Common Colored Gemstones

Key Features:

  • MUST READ INSTRUCTIONS BEFORE USING
  • Presidium is available for any troubleshooting assistance
  • 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.

Buy Now From Amazon – $309.00


8. Presidium Gem Indicator (PGI) – Handheld Tester

Presidium Gem Indicator (PGI) - Handheld Tester

Key Features:

  • N/A

Buy Now From Amazon – $319.00


9. THE PERFECT PART Portable Diamond Tester Tool with Gem Testing Tray & Storage Bag | Professional Audio Diamond Selector II – Gemstone Tester Pen for Jewelry, Ruby, Crystal & Precious Metals Testing

THE PERFECT PART Portable Diamond Tester Tool with Gem Testing Tray & Storage Bag | Professional Audio Diamond Selector II - Gemstone Tester Pen for Jewelry, Ruby, Crystal & Precious Metals Testing

Key Features:

  • 💍【𝗣𝗥𝗢𝗙𝗘𝗦𝗦𝗜𝗢𝗡𝗔𝗟 𝗣𝗥𝗢𝗗𝗨𝗖𝗧】: Designed for quick, precise, and safe diamond testing. Portable electronic device for distinguishing real diamonds from other simulated stones. Diamond pen is equipped with convenient carrying cases.
  • 👨‍🔧【𝗘𝗔𝗦𝗬 𝗧𝗢 𝗨𝗦𝗘】: If the diamond is not real, it will not display and make a sound. If it is a real diamond, there will be a Light up indicator. Real Diamond tester is very easy to use.
  • 🚀【𝗙𝗔𝗦𝗧𝗘𝗦𝗧 𝗘𝗙𝗙𝗘𝗖𝗧】: Display indicator, large / small switch for testing diamonds +/ – 8 points, metal alert ( When a user accidentally hit the metal rather than stone will sound ).
  • 🚴‍♀️【𝗦𝗠𝗢𝗢𝗧𝗛 𝗧𝗔𝗡𝗚𝗟𝗘𝗗-𝗙𝗥𝗘𝗘】: This gemstone testing equipment is not only a diamond tester, but also a multi precious metal tester. It can detect if a gemstone is real or not, including: diamond, sapphire, ruby stone, crystal, agate, jadeite, and other precious stone of various sizes.
  • 🎁【𝗜𝗡𝗦𝗧𝗥𝗨𝗠𝗘𝗡𝗧 𝗖𝗢𝗡𝗙𝗜𝗚𝗨𝗥𝗔𝗧𝗜𝗢𝗡】: This diamond tester pen comes with a leather bag and small testing tray for holding loose stones.

Buy Now From Amazon – $12.59


10. Original Presidium Electronic Diamond/Gemstone Gauge PEGG

Original Presidium Electronic Diamond/Gemstone Gauge PEGG

Key Features:

  • A convenient digital gauge that measures gemstone dimensions.
  • Presidium Electronic Gemstone Gauge is the industry’s first electronic gemstone gauge and utilizes solid-state electronics to accurately measure up to 1/100mm.
  • PEGG features a clear and visible high-tech digital display for ease of reading measurements.
  • Its touch button zeroing allows the convenience of resetting to zero at any measurement point.
  • For more details please check product description.

Buy Now From Amazon – $289.00


Essential Buyer’s Guide for Selecting the Perfect best presidium gemstone tester

Identify Your Requirements

Pinpoint what you specifically need from the best presidium gemstone tester. Understand the features and functionalities that are most critical for your use-case to narrow down your choices.

Inspect Product Quality

Always prioritize the quality of the best presidium gemstone tester. High-quality items tend to last longer and provide better performance. Look for products with strong materials, good build quality, and positive user feedback.

Assess Brand Reputation

The brand’s history can tell you a lot about the quality and reliability of the best presidium gemstone tester. A reputable brand usually guarantees a certain level of quality and customer service.

Vendor Credibility

Consider the credibility of the seller or manufacturer. A reputable vendor or manufacturer often correlates with better customer service and product reliability.

User Reviews and Ratings

Take the time to read through user reviews and ratings. They offer valuable insights into how the best presidium gemstone tester performs in real-world scenarios and can highlight any potential issues.

Longevity and Maintenance

Consider how long the best presidium gemstone tester lasts under normal use. A product that requires less maintenance and is more durable is typically a better investment.

Usability and Convenience

Ensure the best presidium gemstone tester is easy to use and fits comfortably into your routine or lifestyle. User-friendly products enhance your experience and are more likely to satisfy your needs.

Compare Price to Value

Evaluate if the best presidium gemstone tester’s price is reflective of its value. Sometimes paying a little extra upfront can save you money in the long run due to better quality or features.

Product Availability

Check the availability of the best presidium gemstone tester. Products that are easily accessible tend to have better after-sales support and availability of parts or accessories.

Comprehensive Comparison

Compare different best presidium gemstone tester products against each other. Look at each option’s features, benefits, and drawbacks to make an informed decision.

Warranty and After-Sales Support

A solid warranty and reliable customer support can greatly enhance your experience with the best presidium gemstone tester. These factors can also provide peace of mind and save costs in the future.

Stay Updated

The market is always evolving. Keep an eye on new releases and developments to ensure you choose a best presidium gemstone tester that remains relevant and up to date.

Make Your Final Choice

After thorough consideration, choose the best presidium gemstone tester that best meets your criteria and expectations, balancing all factors like quality, usability, and cost.

Our reviews and guides are meticulously curated to assist you in navigating the selection process, helping you make a choice that’s both satisfying and well-informed.


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