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- Presidium Refractive Index Meter II (PRIM II)...
PRIM II refractometer can measure the range of RI value from 1.000 to ~3.000, covering the commonly known gemstones in the market. Continual elimination of possible gemstones through values like R.I., Color, Hardness, and S.G. Results are consistent, reliable with clear and visible display for ease of reading measurements.
物品 #:
2796365
Presidium Refractive Index Meter II (PRIM II) Digital Gemstone Tester | Wide Range 1.0003.000 RI Measurement for Diamonds, Moissanite & Gem
89% of respondents would recommend this to a friend
物品 #:
2796365
HKD 2959
Price Details
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*All items will import from 美國
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現在訂購，約可在下列時間收貨： Sunday, 九月 13
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PRIM II refractometer can measure the range of RI value from 1.000 to ~3.000, covering the commonly known gemstones in the market. Continual elimination of possible gemstones through values like R.I., Color, Hardness, and S.G. Results are consistent, reliable with clear and visible display for ease of reading measurements.
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What Stands Out
Accurate Measurements
Delivers precise refractive index readings crucial for laboratory analysis, ensuring reliable data for optical applications, enhancing laboratory productivity and accuracy.
User-Friendly Interface
Designed with an intuitive interface, enabling quick operation and data retrieval, making it accessible for users across varying expertise levels, boosting efficiency in training and everyday usage.
Compact Design
The portability of the meter allows for easy transport and integration into various environments, providing flexibility for fieldwork while maintaining robust performance in diverse conditions.
產品詳情
- Presidium Refractive Index Meter II (PRIM II) separates diamonds, moissanites, and colored gemstones via its Refractive Index in seconds
- It accurately measures the quantity of light reflected through the stone, covering a range of RI value from 1.000 to ~3.000, including diamonds and moissanites
- The device eliminates the inconvenience of RI liquid usage and offers a fast and easy test process
- The new software allows users to further narrow down possible colored gemstones by entering known values such as color, hardness, and S.G. value
- It also provides additional information regarding gemstone properties and common found locations
- The device is powered up by USB for convenient usage
| Package Weight | 1.18 Pound (540 grams) |
Product Technical Details
| Package Dimensions | 6.2 x 4.3 x 2.8 inches |
| Item Weight | 7.2 ounces |
| Department | womens |
| Manufacturer | PRESIDIUM |
| Item model number | PRIM2 |
Who Should Buy?
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Gemologists
Ideal for professionals who require precise refractive index measurements to identify gemstones and enhance their appraisal accuracy.
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Jewelry Retailers
Perfect for jewelry shops that need to verify the authenticity of gemstones to ensure customer trust and satisfaction.
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Laboratory Technicians
Beneficial for labs where accurate refractive index readings are necessary for material analysis in various scientific applications.
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Casual Users
Not suitable for hobbyists or casual enthusiasts who may not require precise measurements for gemstone identification.
產品敘述
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客戶問題與解答
-
題:
What is the Presidium Electronic Refractive Index Meter II used for?
回答: The Presidium Electronic Refractive Index Meter II is an advanced instrument designed for gemologists and jewelers to accurately measure the refractive index of gemstones. This measurement is crucial in identifying gems and determining their authenticity. With a precise range of refractive indices, this device helps detect discrepancies in gem quality, including simulates or synthetics. For example, if you are a jeweler evaluating a diamond, this meter will help confirm its specifications against industry standards, providing assurance to your clients. -
題:
How does the Presidium Electronic Refractive Index Meter II work?
回答: This meter operates by utilizing a light source that emits light through a gemstone. The device measures the angle of light refraction as it passes through the gem, allowing it to calculate the refractive index based on the gem's properties. It's important to ensure that the gemstone is clean and free of oils for accurate measurements. Using this device can be particularly beneficial when evaluating precious stones, where precise refractive index readings help avoid costly mistakes in purchases or sales. -
題:
Can the Presidium Electronic Refractive Index Meter II be used for various types of gemstones?
回答: Yes, the Presidium Electronic Refractive Index Meter II is versatile and can be used for a broad range of gemstones, including diamonds, sapphires, rubies, and even synthetic stones. The device is designed with a wide measurement range and sensitivity, making it suitable for both precious and semi-precious stones. This flexibility is particularly useful for jewelers who handle diverse inventories or appraisers working with various materials. Use it in your evaluations to ensure you're offering genuine products to clients. -
題:
Is the Presidium Electronic Refractive Index Meter II user-friendly?
回答: Absolutely! The Presidium Electronic Refractive Index Meter II features an intuitive interface and provides clear displays of measurements, making it user-friendly even for beginners. The quick calibration process ensures that users can begin measuring gemstones shortly after setup. This user-friendly design is crucial for busy jewelers who may need to conduct numerous evaluations in a day. Additionally, the clear readings will boost your confidence in gemstone assessments during client consultations. -
題:
What is the accuracy level of the Presidium Electronic Refractive Index Meter II?
回答: The Presidium Electronic Refractive Index Meter II boasts high accuracy within a very narrow range, typically around ±0.01 RI units. This level of precision is vital for gem identification, helping to distinguish between similar-looking stones. For professionals in the jewelry industry, accuracy means making informed decisions regarding the value and authenticity of gemstones. Using this meter significantly reduces the chances of misidentification and ensures that your evaluations meet industry standards. -
題:
Does the Presidium Electronic Refractive Index Meter II require calibration?
回答: Yes, regular calibration is recommended to ensure ongoing accuracy. The device comes with an easy calibration process that can be accomplished in just a few minutes. This is important as environmental factors or usage may affect its measurement. For instance, if you are regularly exposed to changes in room temperature or humidity, recalibrating before each significant use is wise. This practice can guarantee that you maintain accurate readings, especially during critical gem assessments. -
題:
What accessories come with the Presidium Electronic Refractive Index Meter II?
回答: The Presidium Electronic Refractive Index Meter II typically includes a protective carrying case, a measuring guide, calibration solutions, and a user manual. These accessories add to the usability and convenience of the device. For example, the carrying case ensures that the meter is protected during transport to gem shows or client consultations. Having a detailed user manual also aids gemologists in understanding the full capabilities of the device and troubleshooting any issues that may arise. -
題:
Can I use the Presidium Electronic Refractive Index Meter II for educational purposes?
回答: Certainly! The Presidium Electronic Refractive Index Meter II is an excellent educational tool for gemology students and institutions. Its accurate readings and easy-to-understand interface make it ideal for hands-on learning about refractive indices. Educators can use the device to demonstrate concepts related to light refraction and gemstone identification in a classroom setting. Students can gain practical experience that complements their theoretical knowledge, preparing them for future careers in gemology or jewelry design. -
題:
What is the warranty on the Presidium Electronic Refractive Index Meter II?
回答: The Presidium Electronic Refractive Index Meter II typically comes with a manufacturer’s warranty covering defects in materials and workmanship. This warranty period usually spans one year, providing peace of mind for users. Warranty coverage is important as it ensures that you are protected against issues that may arise during usage, such as malfunction or failure to perform accurately. Keeping the device in good condition also helps maintain its warranty status, so regular checks and maintenance are advisable. -
題:
Where can I buy the Presidium Electronic Refractive Index Meter II?
回答: You can buy the Presidium Electronic Refractive Index Meter II from Ubuy, the leading online shopping platform in Hong Kong. Ubuy provides a convenient and reliable source for purchasing this sophisticated gemological tool, ensuring you receive genuine products. Whether you're a professional gemologist or a jewelry enthusiast, Ubuy allows you to easily access this essential instrument right at your fingertips, making the purchasing process seamless and efficient.
Presidium Refractometers PRIM2 Editorial Review
The Presidium Electronic Refractive Index Meter II is a digital reflectometer that reads the refractive index (RI) of gems on a small screen to three decimal places. It can read RI from 1.000 to 3.000 and can connect to a PC to provide possible stones with measured RI. It can be filtered by color, specific gravity (SG), and other parameters. The machine can be used to test round beads as long as the stone has a flat surface. The Presidium Electronic Refractive Index Meter II can be used for raw gems but should not be trusted alone as it is not very accurate. It can be used along with other tests and is pretty handy for a quick test. However, one cannot trust one type of test alone and needs to verify with other methods, such as refractive index. The best method for gemstones under an RI of 1.80 is to get a manual refractometer with the refractive fluid. It is much better than using the Presidium Electronic Refractive Index Meter II. It can distinguish between moissanite and a diamond every time and is an indispensable tool if you are sourcing cut stones. It requires fundamental knowledge of gemstones and their RI.
Customer Reviews & Ratings
83 客戶評分
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5 星
63%
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4 星
9%
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3 星
9%
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2 星
7%
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1 星
12%
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優點
- Can read RI from 1.000 to 3.000, which is a better range than usual refractometers Can connect to a PC to provide possible stones with measured RI Can be filtered by color, SG, and other parameters Can be used to test round beads Can be used for raw gems Can be used along with other tests and is pretty handy for a quick test Can distinguish between moissanite and a diamond every time
缺點
- Not very accurate and cannot be trusted alone as it sometimes works perfectly, and other times it's way off. It has a lot to do with the type of stone and a number of other things Requires fundamental knowledge of gemstones and their RI Cannot be used alone The associated application does not work on Apple/Mac computer
Platform Trust & Buyer Confidence
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F Zhang
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“Good product, and smooth delivery!”
18-Jul-26 · via Trustpilot
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“Great products and services”
17 April 2026 · via Trustpilot
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Khushi
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“Ubuy Hong Kong is a game-changer. I was looking for a specific American brand that doesn't ship to Asia, and Ubuy had it in stock. The selection of global products is incredible. It saves me the hassle of using freight forwarders or asking friends to bring items over. The process was seamless from checkout to delivery”
6 July 2026 · via Trustpilot
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kritika
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“I?m always nervous buying electronics and skincare online, but Ubuy Hong Kong delivered exactly what I ordered and it was 100% genuine. It?s refreshing to find a platform that you can actually trust with premium brands. Will definitely be a returning customer.”
3 July 2026 · via Trustpilot
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“Great product, good packing, the goods arrived quickly and well protected.”
6 June 2026 · via Trustpilot
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Last Updated on August 7, 2026
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HKD 2959
現在訂購，約可在下列時間收貨： Sunday, 九月 13
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
存貨僅剩 4 個物品。
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
特色和優勢
- PRIM II covers commonly known gemstones in the market
- Continual elimination of possible gemstones through values like R.I., Color, Hardness, and S.G.
- RI liquid not required for testing transparent gemstones
- Ideal for separation of gemstones in parcels
- Consistent and reliable results every time with clear and visible display
- Fast and easy test done without the inconvenience and messy usage of RI liquid
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