Presidium
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Gem Indicator (PGI) Gem Tester
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Gem Indicator (PGI) Gem Tester
The Presidium Gem Indicator, the only handheld tester in the industry specifically for colored gemstones... this smart thermal tester also comes with the Presidium patented refined changeable probe tip, which ensures minimal equipment downtime.
Gem Indicator (PGI) Gem Tester
Item #: 2787819

Gem Indicator (PGI) Gem Tester

81% of respondents would recommend this to a friend

Item #: 2787819

SRD 15890

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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us Imported from USA store

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Order now and get it around Sunday, September 27
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The Presidium Gem Indicator, the only handheld tester in the industry specifically for colored gemstones... this smart thermal tester also comes with the Presidium patented refined changeable probe tip, which ensures minimal equipment downtime.
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What Stands Out

Advanced Technology
Utilizes cutting-edge technology to accurately identify and classify gemstones, ensuring reliable results for both novices and experts.
User-Friendly Design
Designed with simplicity in mind, it features a clear display and intuitive controls, making it accessible for all skill levels.
Versatile Applications
Perfect for jewelers, gemologists, and hobbyists, the PGI Gem Tester can be used in various settings, from professional environments to personal collections.

Product Details

Get accurate results with the Presidium Gem Indicator PGI Handheld Tester. Identify diamonds and colored gemstones easily. Shop now at Ubuy Suriname!
  • Thinnest retractable probe tip for constant pressure between probe and gemstone
  • Versatile and reliable with color input function for more precise results
  • Easy-to-read results on a clear digital LED screen; tests an extended range of 31 different gemstones
  • Ergonomic design with sleek chrome-brushed grip; USB port for alternative power and handheld for convenience
  • Available for troubleshooting assistance; must-read instructions before using
Package Weight1.27 Pound

Who Should Buy?

Suitable For
  • Jewelry Professionals

    Ideal for gemologists and jewelers who need a reliable tool for authenticating and grading gemstones.

  • Hobbyist Collectors

    Great for amateur gem enthusiasts seeking to evaluate their gemstone collection effectively.

  • Retail Gem Sellers

    Beneficial for retailers in ensuring the authenticity of gems during sales and customer consultations.

Not Suitable For
  • Casual Buyers

    Not suitable for individuals without gem testing knowledge who may misuse the device incorrectly.

Product Description

Gem Indicator (PGI) Gem Tester

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Gem Indicator PGI Gem Tester used for?

    Answer: The Gem Indicator PGI Gem Tester is a professional-grade tool designed to identify and evaluate gemstones by measuring their refractive index. This tester assists gemologists, jewelers, and enthusiasts in determining the authenticity of gemstones, helping to distinguish between natural and synthetic stones. For example, it can provide clear insights when evaluating diamonds versus substitutes like cubic zirconia, ensuring you're informed about your purchases.
  • Question: How accurate is the Gem Indicator PGI Gem Tester?

    Answer: The Gem Indicator PGI Gem Tester is renowned for its high accuracy in refractive index measurements, often reaching up to 0.01 precision. This level of accuracy is essential for professionals who depend on precise readings during evaluations. For instance, gemologists can confidently make assessments and provide assessments with professional integrity, as even minor discrepancies in refractive indices could indicate different gemstone types.
  • Question: Is the Gem Indicator PGI Gem Tester suitable for beginners?

    Answer: Yes, the Gem Indicator PGI Gem Tester is suitable for beginners as well as advanced gemologists. It features user-friendly instructions and a straightforward design, making it accessible for those new to gemstone testing. Beginners can easily learn to use it effectively, making it an excellent tool for those starting their journey in gemology or jewelry design.
  • Question: Can the Gem Indicator PGI Gem Tester differentiate between synthetic and natural gems?

    Answer: Absolutely, the Gem Indicator PGI Gem Tester is capable of distinguishing between synthetic and natural gems by analyzing their refractive indices. Synthetic gemstones often have characteristics that differ slightly from their natural counterparts. For example, using this tester, one can identify a synthetic diamond versus a natural diamond, which is crucial for ensuring value and authenticity in gemstone transactions.
  • Question: What types of gemstones can the Gem Indicator PGI Gem Tester evaluate?

    Answer: The Gem Indicator PGI Gem Tester can evaluate a wide range of gemstones, including diamonds, sapphires, rubies, and emeralds, among others. It is beneficial for both common and rare stones, providing clarity about their identity and authenticity. For jewelers, this means they can confidently price gemstones and provide accurate information to clients regarding their selections.
  • Question: Does the Gem Indicator PGI Gem Tester require any special maintenance?

    Answer: The Gem Indicator PGI Gem Tester requires minimal maintenance to ensure optimal performance. Users should regularly clean the lens and calibration plate to maintain accuracy and avoid contamination. By keeping it in a protective case when not in use, the device can withstand daily wear and tear, making it a reliable companion for gemologists and jewelers alike.
  • Question: What features make the Gem Indicator PGI Gem Tester stand out?

    Answer: Key features of the Gem Indicator PGI Gem Tester include its digital display, compact design, and ability to test various gemstones efficiently. Its portability allows for on-the-go testing, making it a favorite among professionals who travel for gem evaluations. Additionally, the tester's intuitive interface ensures that users can quickly interpret results, enhancing the overall user experience.
  • Question: Is training available for using the Gem Indicator PGI Gem Tester?

    Answer: While the Gem Indicator PGI Gem Tester comes with a user manual, many organizations and gemology schools offer training courses that include its usage. These training sessions often provide practical insights and hands-on experiences, allowing users to grasp the intricacies of gem testing. Engaging in such training can significantly enhance your confidence and skill level in gemstone evaluation.
  • Question: What are the implications of using the Gem Indicator PGI Gem Tester in the jewelry business?

    Answer: Using the Gem Indicator PGI Gem Tester in the jewelry business can enhance customer trust and satisfaction. Accurate testing of gemstones allows jewelers to provide verifiable information and increase transparency concerning the quality and origin of the gems they sell. This can lead to a loyal customer base and higher sales, as clients appreciate confidence in their purchases.
  • Question: Where can I buy the Gem Indicator PGI Gem Tester in Suriname?

    Answer: You can purchase the Gem Indicator PGI Gem Tester in Suriname through Ubuy, an online platform known for a wide array of products including specialized tools like gem testers. Ubuy provides a user-friendly shopping experience and access to useful information about each product, helping you make an informed decision before your purchase.

Presidium Gold Testers Editorial Review

Gem Indicator (PGI) Gem Tester is designed with a slim profile for convenience, making it easy to handle while identifying various gemstones. Users have found it simple to use, but some report issues with accuracy and calibration, suggesting it may struggle to reliably identify all stones on the market. A number of reviews mention problems with the calibration disc, and the battery compartment cover, which may detract from its usability. The unit is lightweight at 7 ounces, enhancing portability. Despite some negative feedback, many users appreciate its ergonomic design and the assistance it provides when purchasing gems on the go.

Customer Reviews & Ratings

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Pros

  • Slim and lightweight for easy handling
  • Ergonomically designed for comfort
  • Simple to operate for beginners
  • Useful for mobile gem testing
  • Offers a decent variety of gemstone identification

Platform Trust & Buyer Confidence

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4.2/5 9477 reviews
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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Anke
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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Hazel
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

SRD 15890

Order now and get it around Sunday, September 27

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Indicates up to 31 different types of colored gems based on their thermal conductivity
  • Features a color input function that allows users to select from a range of 12 common colors
  • Easy-to-read clear digital LED screen
  • Patented refined probe tip with an industry's thinnest retractable probe tip (0.45mm)
  • Powered by 3 x AAA alkaline batteries (approximately 3 hours of continuous use)
  • Comes with a protective carrying case

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