Sinotech
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Digital Gem Refractometer Gdr800
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Digital Gem Refractometer Gdr800
The Digital Gem Refractometer GDR800 is an ideal instrument to identify gemstones without requiring any messy, damaging contact oil.
Digital Gem Refractometer Gdr800
Item #: 12249551

Digital Gem Refractometer Gdr800

Item #: 12249551

AED 1770

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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    Order now and get it around Wednesday, September 02
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    The Digital Gem Refractometer GDR800 is an ideal instrument to identify gemstones without requiring any messy, damaging contact oil.
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    What Stands Out

    High Accuracy
    The GDR800 offers precise measurements of gem refractive indices, ensuring reliable assessments for gemologists and jewelers, enhancing their ability to evaluate gemstones with professional confidence.
    User-Friendly Interface
    Designed with an intuitive display and simplified controls, the GDR800 makes it easy for both beginners and experts to operate, streamlining the gem assessment process without sacrificing quality.
    Compact Design
    The portable, lightweight design of the GDR800 allows for convenient use on-site or in the lab. It’s easy to handle and store, making it an ideal tool for mobile gem testing.

    Product Details

    Get accurate readings of the refractive index of gemstones with the Sinotech Digital Gem Refractometer GDR800. Test gemstones without the need for contact oil. Shop now at Ubuy UAE!
    Item Weight1.5 lbs (680 grams)

    Who Should Buy?

    Suitable For
    • Gemstone Dealers

      Perfect for professionals to accurately measure the refractive index of gems, aiding in value assessment and authenticity verification.

    • Jewelry Designers

      Helps designers evaluate gemstones precisely, ensuring quality and enhancing their craft while producing custom jewelry pieces.

    • Educational Purposes

      Ideal for geology and mineralogy students learning about refractive properties, fostering hands-on experience in their studies.

    Not Suitable For
    • Casual Hobbyists

      May not justify investment due to its complexity and cost for those with occasional interest in gemstones.

    Product Description

    Digital Gem Refractometer Gdr800

    Have any Query? Chat with us

    Customer Questions & Answers

    • Question: What is a Digital Gem Refractometer Gdr800?

      Answer: The Digital Gem Refractometer Gdr800 is a precise instrument used to measure the refractive index of gemstones and other transparent materials. This tool is essential for gemologists, jewelers, and appraisers, as it allows for accurate identification of gemstones based on their optical properties. The digital display provides clear readings, making it user-friendly even for those who may not have advanced knowledge of gemology.
    • Question: How does the Digital Gem Refractometer Gdr800 work?

      Answer: The Gdr800 operates by shining a light through a gemstone and measuring the angle of refraction as light passes from air to the stone. The refractive index is calculated using this angle, and the result is displayed digitally for quick interpretation. Because of its digital readout, users can easily obtain precise measurements without the need for complex calculations, making it ideal for both novice and experienced gem enthusiasts.
    • Question: What types of materials can be tested with the Gdr800?

      Answer: The Digital Gem Refractometer Gdr800 is designed primarily for testing transparent or translucent gemstones, including diamonds, sapphires, rubies, and even glass. By providing accurate refractive index readings, the device helps in distinguishing between different gemstones and identifying synthetic stones or imitations. This versatility makes it a valuable tool in the fields of jewelry appraisal and gem identification.
    • Question: Is the Gdr800 suitable for beginners in gemology?

      Answer: Yes, the Digital Gem Refractometer Gdr800 is highly suitable for beginners due to its straightforward design and digital interface. Even those without extensive gemology knowledge can quickly learn to use it effectively. The clarity of the digital readout removes the guesswork, allowing new users to gain confidence in their ability to identify and evaluate gemstones.
    • Question: What are the advantages of using a digital refractometer over a manual one?

      Answer: Digital refractometers like the Gdr800 provide several advantages over manual models, including faster measurements and reduced chances of human error. The digital display eliminates the need for interpretation, providing direct readings that enhance accuracy. Furthermore, digital devices often come with features such as automatic temperature compensation, making them more reliable in various conditions, which is crucial for accurate gemology work.
    • Question: Can the Gdr800 be calibrated?

      Answer: Yes, the Digital Gem Refractometer Gdr800 can be calibrated to ensure its accuracy. Regular calibration helps maintain precise measurements over time, especially if the device is used frequently. Users should follow the manufacturer’s instructions for calibration procedures, which typically involve using a known reference liquid for the refractive index, ensuring that your readings remain consistent and trustworthy.
    • Question: What is the measurement range of the Digital Gem Refractometer Gdr800?

      Answer: The Gdr800 typically has a measurement range suited for most gemstones, generally around 1.300 to 1.700, which covers a wide variety of transparent stones. This range allows gemologists to analyze a large selection of gemstones, from common varieties to more exotic ones. Its capability to measure both high and low refractive indices makes it a comprehensive tool for jewelers and gem enthusiasts alike.
    • Question: Is the Gdr800 portable for on-site gem assessments?

      Answer: Yes, the Digital Gem Refractometer Gdr800 is designed to be compact and lightweight, making it portable for on-site gem assessments. Its battery operation allows you to use it without needing a power source, which is ideal for gem shows, field assessments, or home use. This portability ensures that gem enthusiasts and professionals can perform assessments wherever needed, making it a versatile tool for gemology.
    • Question: What accessories come with the Gdr800?

      Answer: The Digital Gem Refractometer Gdr800 usually comes with specific accessories to facilitate its use, such as cleaning cloths, a calibration liquid, and instructions for operation. Some packages might also include a carrying case for portable protection. These accessories enhance the user experience, ensuring that the device remains in optimal condition and operates accurately during assessments.
    • Question: Where can I buy Digital Gem Refractometer Gdr800 in UAE?

      Answer: You can purchase the Digital Gem Refractometer Gdr800 from Ubuy in UAE. Ubuy offers a convenient online shopping experience and a variety of products, making it easy to access the Gdr800, alongside other tools and accessories needed for gemology and jewelry work.

    Sinotech Refractometers Editorial Review

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    Pros

    • Highly accurate readings
    • User-friendly interface
    • Durable design
    • Fast measurement time
    • Compact and portable

    Cons

    • Calibration required occasionally

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    “Excellent experience”

    11 June 2026 · via Trustpilot
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    “I had an excellent experience with Ubuy UAE. I ordered a product from the USA, and the website clearly mentioned that deliveries might be delayed due to the current situation in the Middle East. Despite that, my order arrived in just one week, which exceeded my expectations. The shipment was handled by DHL, and the entire delivery process was smooth, fast, and hassle-free. The package arrived in perfect condition with no issues at all. What impressed me the most was the pricing. The product was significantly cheaper than ordering the same item directly through Amazon USA and shipping it to the UAE, where I would have had to pay higher delivery charges and additional customs fees. Ubuy provided great value, transparent communication, and reliable delivery. Based on my experience, I would definitely use them again and highly recommend them to anyone in the UAE looking to purchase products from overseas. Thank you, Ubuy UAE, for a fantastic shopping experience!”

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    “On time delivery and great product at a really great price!”

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    “Excellent experience! The service was top-notch, reliable, and very fast. I am completely satisfied with their professionalism and highly recommend Ubuy UAE to everyone.”

    02-Jul-26 · via Trustpilot
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    AED 1770

    Order now and get it around Wednesday, September 02

    QTY:

    Secured transactionsecured transaction

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

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    Features & Benefits

    • Gives a reading of the Refractive Index with reproducibility of 0.007RI Index Units
    • Covers the full Range from 1.30 to 2.99RI
    • Can test gemstones without requiring any contact oil
    • RI Test Range: 1.30 to 2.99RI
    • Works at a temperature of 25-28°C
    • Refractive Index of some gemstones: Quartz: 1.544-1.558RI, Topaz: 1.63-1.64RI, Ruby: 1.74-1.78RI

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