Gemological Gemstone Gem Refractometer Built-in Light
Gemological Gemstone Gem Refractometer Built-in Light
The Gemological refractometer is considered by many to be the most important of all gem testing instruments. The primary use of the refractometer is to measure the angle at which light traveling through the stone is bent or refracted. This is called Refractive Index (R.I.). As Refractive Index is usually different for different gemstones, this provides an important clue for accurate gemstone identification. Gemological refractometer also can be used to determine whether or not a stone is single or double refracting. For doubly refracting stone, based on the difference between 2 readings you obtain from the refractometer, strength of the gemstone's double refraction (birefringence) may be computed and it offers an important gem identification aid, as it differs from gem to gem. Also refractometer is one of the few instruments capable to give you information for opaque stones as well as transparent stones. Quality of the instrument is important to enable you to perform consistent and reliable test for years to come. Our refractometer has all metal construction with built-in light (no flashlight or any other light source required) and polarizing filter, allowing you to perform all needed tests, it comes with vinyl soft case with belt loop for convenience while traveling and hard case for safe storage. Features: All metal quality construction Built-in LED light source with 3 x 1.5v batteries - included Accuracy: 0.01 Measurement range: 1.30 - 1.81 Polarizing Filter Weight: 0.9 lb Application: Gemology Hard and soft cases are included R.I. liquid is not included, please purchase certified R.I. oil from reputable sources. Please be aware that R.I. liquid is not included.
- ASIN: B000XACSOS
- Brand: ADE Advanced Optics
- Manufacturer: ADE Advanced Optics
Chelsea Filter, Dichroscope, Jewelers Loupe, Gemological Refractometer - Gem Identification Tools, Bundle 6 Items
Chelsea Filter, Dichroscope, Jewelers Loupe, Gemological Refractometer - Gem Identification Tools, Bundle 6 Items
Chelsea Filter - now used to identify mostly any gemstone Dichroscope - invaluable for distinguishing certain stones from similar gems. 10x triplet jewellers loupe in black housing - one of the most important gemstone identification tools. Quality Gemological Refractometer with 10 grams of Certified R.I. 1.80 Liquid included. All Metal Construction. Identify almost all precious gemstones with this kit. Instructions on how to use 4 tools to identify gemstones. BONUS - GEMSTONES OF THE WORLD book by Walter Schumann. Essential Plus Gemological Tools Kit. This kit, if used properly, will allow you to identify almost all precious gemstones, using 4 essential gemological tools - Chelsea Filter, Dichroscope, Jewellers Loupe and Refractometer (10g of Certified 1.80 R.I. Liquid included), and to learn a lot about gemstones from hardcover Gemstones of the World book by Walter Schumann, highly rated by readers and experts.
- UPC: 717029486660
- ASIN: B001EBEEBU
- Brand: Ade Advanced Optics
- Manufacturer: Ade Advanced Optics®
Gain Express Gem Gemological Gemelogy Refractometer with Built-in LED Light + RI Oil + 1.30-1.81 RI Range + 0.01 nD Scale Division
Gain Express Gem Gemological Gemelogy Refractometer with Built-in LED Light + RI Oil + 1.30-1.81 RI Range + 0.01 nD Scale Division
Gemstone Refractometer 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. 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. Features: HEAVY-DUTY and Built to last Provides three (3) 1.5V button type batteries 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 provided Approved by strict quality and safety standards Undoubtedly durable, very reliable and assures accurate testing results Specification: Measuring Range : 1.30 - 1.81 RI Minimum Graduation : (RI) 0.01 RI Illumination : Internal Light Source with momentary/power switch Dimension : 35mm x 63mm x 115mm Scale Division : 0.01 nD Weight : 0.4 kg Ranges of Application : Laboratory, Gemology Filter : Polarizing filter Power Source : 3 x AG13 1.5V button batteries Color : Black Set includes: 1 x Gem Refractometer 1 x FREE bottle of 1.800 Refractive Index Oil 3 x FREE 1.55V AG13 Batteries 1 x FREE Refractometer Index Reference List (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.) Polarizing Filter English User's Manual Standard Factory Packaging
- UPC: 701936209429
- ASIN: B00MNEBAQ4
- Brand: Gain Express
- Manufacturer: Gain Express Holdings Ltd
Jewelry Refractometer, RHG181 1.30-1.81 Professional Gemstone ldentification Gem Refractometer
Jewelry Refractometer, RHG181 1.30-1.81 Professional Gemstone ldentification Gem Refractometer
Features: 1. Specially designed for measuring the refractive index of gemstones and solid materials. 2. Lightweight and compact, easy to carry. 3. This refractometer features high accuracy and easy operation. 4. Identify single and double gems quickly and precisely. 5. Low battery consumption for long service time. 6. Approved by strict quality and safety standards for a long and trouble-free using. Specification: Condition: 100% Brand New Item Type: Refractometer Material: ABS Refractive Index Range: 1.30-1.81 RI Color: As Pictures Shown Power Supply: 1 * AA Battery Size: Approx. 13 * 6 * 3.5cm/5.1 * 2.4 * 1.4inch Weight: Approx. 720g Package List: 1 * Refractometer 1 * Electric Torch (Battery is NOT included) 1 * English Manual
- UPC: 750086120603
- ASIN: B07RFPT1PH
- Brand: Rotekt
- Manufacturer: Rotekt
Pocket Diffraction Grating Gemological Spectroscope for Quick Gemstone Identification and GIA Use
Pocket Diffraction Grating Gemological Spectroscope for Quick Gemstone Identification and GIA Use
This pocket gemological spectroscope in its lightweight yet durable leather case is perfect for when you are on the road and need to make quick purchasing decisions. Bring it with you on buying trips, vacations, or to trade shows. This instrument is so portable, you can easily fit it in your pocket or purse for everyday use. Use this instrument as a confirmation by viewing the absorption spectra of the stone you are examining. Using a white light source and having some knowledge of known absorption spectra will enable you to eliminate possibilities. Pocket Diffraction Grating Spectroscope, with fixed slit & fixed focus. Allows you to read a gemstone's spectral signature. Constructed of stainless steel & black acetol, 55mm long, 14.5mm wide, and weighs 28 grams. Comes in a protective carrying case. The spectroscope is used to analyze light passing through a stone. White light is a combination of all the colors of the visible spectrum: red, orange, yellow, green, blue, indigo, and violet. This is the rainbow we see when light travels through a prism. When white light travels though a stone, one or more of the wavelengths that produce color are absorbed by the gem. The colors that are NOT absorbed are the colors seen when we look at the stone. The wavelengths that are absorbed by the stone are seen in the spectroscope as vertical black lines in the spectrum. Each stone has a unique absorption spectrum (like a fingerprint of the stone) When identifying a stone we look for a spectrum that is characteristic for that stone. The wavelengths that are absorbed by the stone are seen in the spectroscope as verticle black lines in the spectrum. Each stone has a unique absorption spectrum (like a fingerprint of the stone) When identifying a stone we look for a spectrum that is characteristic for that stone.
- UPC: 717029486806
- ASIN: B00D49E8XE
- Manufacturer: Ade Advanced Optics®
Professional Gemstone ldentification Gem Refractometer RHG181 1.30-1.81
Professional Gemstone ldentification Gem Refractometer RHG181 1.30-1.81
Features: 1. Specially designed for measuring the refractive index of gemstones and solid materials. 2. Lightweight and compact, easy to carry. 3. This refractometer features high accuracy and easy operation. 4. Identify single and double gems quickly and precisely. 5. Low battery consumption for long service time. 6. Approved by strict quality and safety standards for a long and trouble-free using. Specification: Condition: 100% Brand New Item Type: Refractometer Material: ABS Refractive Index Range: 1.30-1.81 RI Color: As Pictures Shown Size: Approx. 13 * 6 * 3.5cm/5.1 * 2.4 * 1.4inch Weight: Approx. 721g Package List: 1 * Refractometer 1 * Electric Torch (Powered by 1 * AA battery which is NOT included)) 1 * English Manual 1 * 3 ML Reflective Index Fluid
- UPC: 743562950085
- ASIN: B07SYX4S3X
- Brand: Jadpes
- Manufacturer: Jadpes
2 Bottles/Each 3 ML Refractive Index Fluid Oil,Fluid, Test, Gemstone Each 1.300-1.800 RI for Gem Refractometers
2 Bottles/Each 3 ML Refractive Index Fluid Oil,Fluid, Test, Gemstone Each 1.300-1.800 RI for Gem Refractometers
Features: 1. The refractive index fluid is gemologist tool for identifying refractive index. 2. The product allows your refractometer to measure within the measuring range of 1.30 to 1.80 refractive index. 3. Perfect for testing all of your gem stones. 4. This liquid can also be used to reduce or eliminate glare from a gem's surface, facilitating inspection of the gem's interior for inclusions and other defects. 5. This GL-01 fluid is packed and will be supplied in an glass vial and contains 3ml of solution. Specification: Condition: 100% Brand New Item Type: Oil Material: Glass + Liquid Volume: 3ML Weight: Approx. 50g Package list: 2 Bottles Refractive Index Fluid Oil
- UPC: 750086850494
- ASIN: B07RPSZN68
- Brand: Clina
- Manufacturer: Clina
GOWE External Flashlight Portable Gemology Gemstone GEM Refractometer with Gift Box Gemology Test Instruments
GOWE External Flashlight Portable Gemology Gemstone GEM Refractometer with Gift Box Gemology Test Instruments
GOWE External Flashlight Portable Gemology Gemstone GEM Refractometer with Gift Box Gemology Test Instruments
- UPC: 827674676245
- ASIN: B00PU7ZLGG
- Brand: Gowe
- Manufacturer: Gowegroup
FidgetFidget Digital Gem Refractometer 1.4-2.0 RI Gemstone Gemology Gemological Diamond Tool
FidgetFidget Digital Gem Refractometer 1.4-2.0 RI Gemstone Gemology Gemological Diamond Tool
Description:- Each kind of gem has a typical refractive index due to its chemical composition and crystallization structure. Refractive index is one of most important optical parameter, through the parameters you can judge whether the gem is an anisotropic or isotropic stone.- This digital gem refractometer is designed to measure the refractive index of gems accurately. With the full range from 1.400 to 2.000 RI, it can be used to test almost all kinds of gem. You don?t need to apply RI fluid, just simply put your sample on the test platform and read the result on the LCD very quickly and conveniently.- A gem refractometer is the primary and most powerful tool in gemstone identification. Therefore, it is widely used in jewelry stores, gem workshops, museums & collections, auctions, laboratories and etc.Features:- High accuracy- No refractometer oil needed- Read results on LCD- Easy and simple to useSpecification:- Product Name: Gem Refractometer- Model: DGR-501- Color: Silver- Material: Alumuim Alloy- Power Supply: 1x 9V Layer-built Battery(Not including)- Working temperature: 5 ~ 30°C- Measuring Range: 1.400 ~ 2.000 RI- Item Size: approx. 105 x 60 x 35 mm
- ASIN: B07NDDLNZY
- Brand: FidgetFidget
- Manufacturer: FidgetFidget
Gem Refractometer GI-161-2 With Built-in LED Light Source
Gem Refractometer GI-161-2 With Built-in LED Light Source
Measuring Range :1.30 - 1.81 RI Minimum Graduation : (RI) 0.01 RI Illumination : Internal Light Source with momentary/power switch Dimension : 35mm x 63mm x 115mm Scale Division : 0.01 nD Weight : 0.4 kg Ranges of Application : Laboratory, Gemology Filter : Polarizing filter Power Source : 3 x AG13 1.5V button batteries HEAVY-DUTY and Built to last Provides three (3) 1.5V button type batteries Convenient & easy to carry With built-in Light Source that makes it a carry-and-use-it-anywhere device A bottle of Refractive Index Fluid is povided Approved by strict quality and safety standards Undoubtedly durable, very reliable and assures accurate testing results Comes with batteries, leather pouch case, polarizing filter, index oil, index reference list and user's manual
- UPC: 700112562198
- ASIN: B009CJAJNI
- Brand: Grand Index
- Manufacturer: Grand Index