Super September 2021 selected products
$40.00 - $58.00
Min. Order : 1 Piece

Built in light electronic Gem Refractometer for Gemological Gemstone Diamond Jewel Testing Tool

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Payment Terms: Western Union,T/T,MoneyGram,paypal
Supply Ability: 12000 Piece/Pieces per Month
Min. Div.: 0.01 nD
Place of Origin: Fujian China
Power Source: 3 x AG13 1.5V button batteries
Size: 35mm x 63mm x 115mm
Model Number: GR-004
Weight: 0.4 kg
Brand Name: HEDAO
Jewelry Tools & Equipments Type: Testers & Measurements
Product name: Digital Gem Refractometer Jewelry refractometer gemstones
Filter: Polarizing filter
Illumination: Internal Light Source with momentary/power switch
category: Gem refractometer
Measurement Accuracy: (RI) 0.01 RI
Packaging Detail: cartons for Best China supplier Digital Gem Refractometer Natural Stone Jewelry refractometer gemstones
Fuzhou Hedao Trade Co., Ltd.
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1.Gemological Refractometer
2.1.30-1.81 nD
3.Internal LED illumination
4.Laboratory, Gemology
5.Polarizing filter
Convenient & easy to carry With built-in Light Source that makes it a carry-and-use-it-anywhere device Comes with Automatic Temperature Compensation (ATC) that let itself adjust to the climate A bottle of Refractive Index Fluid is not povided Approved by strict quality and safety standards Undoubtedly durable, very reliable and assures accurate testing results Comes with leather pouch case, polarizing filter, index reference list and user's manual Introduction This model is commonly known as Gemstone Refractometer, is the primary and most powerful tool in identify and authenticate polished precious and semi-precious gemstones and observing the optical properties and the structure of gemstones. This model is just as good as the expensive models used in gemological institutes. With the aid of Contact liquid (RI Fluid), that will create an optical contact between the glass and the gemstone, you can measure or test the Refractive Index of faceted stones, transparency or opacity, and its beauty, durability and scarcity. The refractive index (RI) of a gemstone provides the single most important piece of information to a gemologist seeking to identify an unknown stone. Due to its chemical composition and crystallization structure, each gem has a typical refractive index. In fact, you can also use this tool to measure R.I. for many minerals in crystal form as long as the crystals have a flat and polished face. Through these parameters, you can determine whether the gem is a Single Refraction (Isotropic) or Double Refraction (Anisotropic or Birefringence). Plus an option to get an extra bottle of 1.800 Refractive Index Oil just by adding a small amount to your order, see Available Options.
Measuring Range
1.30 - 1.81 RI
Minimum Graduation
(RI) 0.01 RI
Internal Light Source with momentary
35mm x 63mm x 115mm
Scale Division
0.01 nD
0.4 kg
Ranges of Application
Laboratory, Gemology
Polarizing filter
Power Source
3 x AG13 1.5V button batteries
HEAVY-DUTY and Built to last
three (3) 1.5V button type batteries
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