· diamond testers  · 12 min read

Top Gemstone Testers: Best Picks for Professional Jewelry Making and Identification

Discover the top-rated gemstone testers for professionals, providing reliable and accurate identification of diamonds, moissanites, and colored gemstones.

Are you a professional jeweler, gemologist, or hobbyist looking for the most reliable and accurate gemstone tester? Our comprehensive guide showcases the best professional gemstone testers on the market today. Whether you need to identify diamonds, moissanites, or common colored gemstones, we've got you covered.

Presidium Instruments Gem Tester II Presidium Instruments Gem Tester II

PROS

  • Accurate differentiation between diamonds, moissanites, and popular colored gemstones
  • Assisted Thermal Calibration (ATC) ensures consistent testing results
  • Ergonomic design provides a comfortable grip and easy operation
  • Compact and portable for convenient use in various settings

CONS

  • May require practice to master the testing technique
  • Priced higher than some basic gemstone testers

The Presidium Instruments Gem Tester II (PGT II) is a professional-grade device designed to accurately identify diamonds, moissanites, and a range of colored gemstones. Its Assisted Thermal Calibration (ATC) feature ensures reliable testing results, making it an ideal tool for jewelers, gemstone enthusiasts, and hobbyists who demand precision and accuracy.

The Gem Tester II's user-friendly design and compact size make it both convenient and portable. Its ergonomic handle and intuitive controls ensure comfortable operation, even during prolonged use. Additionally, the device comes with a comprehensive user manual and a one-year warranty for added peace of mind. Overall, the Presidium Instruments Gem Tester II is a valuable investment for anyone seeking a reliable and accurate gemstone identification solution.

Presidium Instruments Gemstone Tester II (PGT II) Presidium Instruments Gemstone Tester II (PGT II)

PROS

  • Identifies diamonds, moissanites, and common colored gemstones
  • Assisted Thermal Calibration (ATC) for accurate readings
  • Compact and portable for easy use
  • Easy-to-read digital display

CONS

  • May not be suitable for testing very small or thin gemstones

The Presidium Instruments Gem Tester II (PGT II) is a professional-grade gemstone tester that is used by jewelers and gemologists around the world. It is designed to quickly and accurately identify diamonds, moissanites, and common colored gemstones. The PGT II uses a combination of thermal and electrical conductivity testing to determine the type of gemstone being tested. This makes it a very reliable and accurate tester.

One of the best features of the PGT II is its Assisted Thermal Calibration (ATC) system. This system helps to ensure that the tester is always calibrated correctly and giving accurate readings. The ATC system also makes it easy to calibrate the tester yourself, if needed. The PGT II is also very compact and portable, making it easy to use in the field or in the lab. It has a large, easy-to-read digital display that makes it easy to see the results of your tests.

Professional Gemstone Tester Kit for Authenticity and Purity Professional Gemstone Tester Kit for Authenticity and Purity

PROS

  • Accurately identifies diamonds, gemstones, moissanites, and precious metals
  • Digital display for clear and precise readings
  • Instant and non-destructive testing method
  • Portable and easy-to-use for both professionals and hobbyists

CONS

  • Batteries not included
  • May require calibration for optimal accuracy

The Purity Testing Kit for Diamonds, Gemstones, Moissanites, and Precious Metals is a professional-grade tool that empowers you to authenticate and determine the purity of your valuable gems and jewelry. This sophisticated device utilizes cutting-edge technology to provide instant and reliable results, eliminating the need for guesswork or costly laboratory testing.

With its user-friendly digital display, the tester provides clear and precise readings, indicating the type of gemstone or metal being tested as well as its purity level. The non-destructive testing method ensures that your precious possessions remain unharmed during the process. Whether you're a professional jeweler, a gemstone enthusiast, or simply curious about the authenticity of your jewelry, this tester is an invaluable tool that will provide you with peace of mind and valuable insights.

Diamond Selector II - Professional Gemstone Tester for Accurate Gemstone Identification Diamond Selector II - Professional Gemstone Tester for Accurate Gemstone Identification

PROS

  • High accuracy, enables precise identification of diamonds and other gemstones
  • User-friendly design, suitable for both novice and expert jewelers
  • Compact and portable, can be easily carried in a pocket or toolbox
  • Durable construction, ensuring years of reliable use.
  • Powered by a 9V battery, providing extended usage time

CONS

  • Can be affected by certain factors such as metal presence or surface contaminants, requiring proper calibration for optimal accuracy
  • Requires some practice to master the technique for reliable results

The Diamond Selector II professional gemstone tester is the go-to tool for anyone looking for a precise and reliable way to identify diamonds and other gemstones. It combines high accuracy with a compact and portable design and is perfect for both novice and experienced jewelers. With its user-friendly interface and battery-powered operation, you can confidently take it with you wherever you go and carry out gemstone identification on the spot. While the tester may be affected by external factors like metal presence or surface impurities, proper calibration can ensure optimal accuracy. To master the technique, some practice is necessary for consistent and reliable results. Overall, the Diamond Selector II professional gemstone tester is an indispensable tool that empowers users to identify gemstones like professionals, making it a valuable investment for any jewelry enthusiast or professional jeweler.

Whether you're an experienced jeweler or just starting out, the Diamond Selector II gemstone tester is an invaluable tool that empowers you to verify and identify gemstones with confidence. Its sleek design, combined with high accuracy and portability, make it an indispensable addition to any jeweler's toolkit. Its user-friendly operation makes it accessible to both novices and experts, and the battery operation ensures convenience and uninterrupted usage. Remember that proper calibration is key to maintaining optimal accuracy, and some practice is recommended to master the technique. With its ability to distinguish between diamonds and other gemstones, the Diamond Selector II is an essential tool for anyone involved in the jewelry industry or gemstone collecting

Professional Gemstone Tester by Calcite Dichroscope Professional Gemstone Tester by Calcite Dichroscope

PROS

  • Precise determination of pleochroic colors for accurate gemstone identification
  • Robust metal body ensures durability and long-lasting performance
  • Ideal for professional gemologists, jewelers, and gemstone enthusiasts

CONS

  • May require some practice to master the technique
  • Not suitable for evaluating opaque gemstones

Introducing the professional-grade gemstone tester from Calcite Dichroscope, an indispensable tool for discerning gemologists and jewelry enthusiasts alike. This high-precision instrument empowers you to precisely analyze the pleochroic colors of gemstones, providing crucial insights for accurate identification.

Crafted with a sturdy metal body, this gemstone tester is built to withstand the rigors of daily use. Its ergonomic design ensures comfortable handling, allowing for prolonged use without fatigue. Whether you're a seasoned professional or just starting your gemological journey, this tool will elevate your gemstone evaluation capabilities.

GemOro UltraTester 3+ Diamond Tester: Your Gemstone Testing Partner GemOro UltraTester 3+ Diamond Tester: Your Gemstone Testing Partner

PROS

  • Effortlessly distinguishes diamonds from moissanite and white sapphire.
  • Delivers expert-level accuracy, ensuring precise identification.

CONS

  • May not be suitable for testing irregularly shaped gemstones.
  • Requires careful handling to prevent damage to the probe.

Enter the world of pristine gemstones with the GemOro UltraTester 3+, your indispensable companion for professional gemstone testing. This precision tool empowers you to confidently identify diamonds, moissanite, and white sapphire, empowering you to make discerning judgments in your gemstone evaluations. Its intuitive design and meticulous accuracy will undoubtedly elevate your expertise.

The UltraTester 3+ stands out with its remarkable ability to differentiate diamonds from their imitators. Its advanced technology ensures precise readings, allowing you to distinguish genuine diamonds from moissanite and white sapphire with utmost certainty. This unparalleled accuracy makes it an invaluable asset for jewelers, gemologists, and anyone seeking to establish the authenticity of precious stones.

Professional Gemstone Tester Pen Professional Gemstone Tester Pen

PROS

  • Precise diamond and gemstone identification
  • Portable and convenient design for on-the-go testing
  • Durable construction ensures longevity and reliability

CONS

  • May require some practice to achieve accurate results
  • Not suitable for testing extremely small or fragile gemstones

Delve into the world of gemology with the Dupeakya Professional Gemstone Tester Pen. This handheld device empowers you to effortlessly identify diamonds and an array of precious stones with unparalleled precision. Its portable design makes it an indispensable companion for jewelers, collectors, and gemstone enthusiasts alike.

The tester's advanced electronic technology ensures reliable and accurate readings. Simply place the tip of the pen on the gemstone and observe the LED indicator. A distinctive light and sound signal confirms the presence of a genuine diamond. For colored gemstones, the indicator provides a distinct audible signal and vibration, enabling you to distinguish between various types.

Professional Jeweler's Diamond & Gemstone Analyzer Tester Professional Jeweler's Diamond & Gemstone Analyzer Tester

PROS

  • Accurately distinguishes genuine diamonds and moissanites from simulants and lab-created stones.
  • Equipped with a stone gauge for precise measurements of stone size and dimensions.

CONS

  • Requires a bit of practice to master the technique for optimal results.
  • May not be suitable for testing very small or oddly shaped gemstones.

The Deluxe Jeweler's Diamond & Gemstone Analyzer Tester is a professional-grade tool designed to assist in the identification and evaluation of precious stones. It employs advanced technology to differentiate between genuine diamonds and moissanites from lab-created simulants, providing reliable results. Additionally, the integrated stone gauge offers precise measurements, making it a valuable asset for jewelers, gemologists, and collectors alike.

While the tester requires some practice to achieve consistent accuracy, its user-friendly design and clear instructions make it accessible to both seasoned professionals and enthusiasts. Its compact size and portability allow for convenient use in various settings, from jewelry workshops to field expeditions. Overall, this tester is a valuable investment for anyone seeking a reliable and comprehensive tool for gemstone evaluation.

Diamond Selection Genie for Novices and Pros Diamond Selection Genie for Novices and Pros

PROS

  • Efficient and accurate thermal conductivity technology
  • Dual functionality providing 60x magnifying and diamond testing
  • Easy-to-use interface with vibrant LED indicators

CONS

  • Battery power may deplete faster with high usage
  • Calibration is necessary before initial use and after prolonged inactivity

Discover the secret to identifying gemstones like an expert with the top-notch Diamond Tester Pen! This handy device packs a punch with its advanced thermal conductivity meter, ensuring precise diamond detection. Plus, its built-in 60X magnifying glass grants you an up-close and personal view of your precious stones. Whether you're a seasoned jeweler or just starting your gemmology journey, the Diamond Tester Pen empowers you with the knowledge and confidence to assess gemstones like a pro.

Featuring a sleek and user-friendly design, the Diamond Tester Pen is a breeze to operate. Its vibrant LED indicators provide instant feedback, guiding you every step of the way. Its compact size and portability make it the perfect companion for appraisers, jewelry enthusiasts, and anyone eager to delve into the fascinating world of gemstones.

Smart Pro SPGE-I Gem Eye I Gem & Diamond Tester Smart Pro Smart Pro SPGE-I Gem Eye I Gem & Diamond Tester Smart Pro

PROS

  • Precise and reliable gemstone identification with advanced detection technology
  • Ergonomic and portable design for effortless use and portability

CONS

  • May not distinguish between all types of gemstones with the same accuracy
  • Battery life could be improved for extended use

Introducing the SmartPro SPGE-I Gem Eye I - the professional's choice for discerning the authenticity of gemstones. This innovative tester harnesses cutting-edge technology to provide accurate and reliable identification of precious gems. Its compact and ergonomic design ensures effortless handling, while the intuitive interface simplifies the process for both experts and enthusiasts alike.

The Gem Eye I boasts an impressive array of features, including an advanced heat sensor and thermal conductivity detection. These technologies enable precise differentiation between various gemstones, allowing you to verify the authenticity of diamonds, moissanite, sapphires, and more. The tester's portability makes it an ideal tool for on-the-go鑑定assessments, whether you're at a gem show or evaluating a potential purchase.

This article provides an in-depth analysis of the best professional gemstone testers available, ensuring accurate identification of diamonds, moissanites, and colored gemstones. We've evaluated each tester's features, accuracy, ease of use, and value for money, empowering you to make informed decisions.

Frequently Asked Questions

What factors should I consider when choosing a professional gemstone tester?

When selecting a professional gemstone tester, consider factors such as accuracy, ease of use, versatility, durability, and price. Choose a tester that aligns with your specific needs and budget.

Can gemstone testers accurately distinguish between diamonds and moissanites?

Yes, professional gemstone testers utilize advanced thermal conductivity or electrical conductivity methods to effectively differentiate between diamonds and moissanites.

What additional features are beneficial in a professional gemstone tester?

Look for testers with features like illuminated display, adjustable sensitivity, auto-calibration, and portability for ease of use and accurate results.

How can I ensure the accuracy of my gemstone tester?

Regular calibration is crucial for maintaining accuracy. Follow the manufacturer's instructions for calibration and use known samples to verify the tester's performance.

What is the price range for professional gemstone testers?

Professional gemstone testers vary in price depending on features and accuracy. Expect to invest anywhere from $200 to $2,000 or more for a high-quality tester.

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