Gemstone Refractometer Gemology Gemologist RGM-800 Internal LED & Flashlight Gem
Item Description: RGM-800 Portable Combo Gemological Refractometer with a flashlight and LED internal light
COMBO LED INTERNAL LIGHT AND
OPTIONAL EXTERNAL SLOT FOR A FLASHLIGHT!
Comes with instructions! Written by our staff, not converted from another language!
Comes with a Gemstone Refractive Index Chart!
Comes in a Blue Hard case!
We were the first to sell these units on eBay!
Measuring Range :1.30 - 1.81 RI
Minimum Graduation : (RI) 0.01 RI
Dimension : 125mm x 70mm x 40mm
Scale Accuracy: 0.01 nD
Weight : 0.4 kg
Ranges of Application : Laboratory, Gemology
Power Source : 3 x AG13 1.5V button batteries
One BRAND NEW RGM-800 Portable Gemological Refractometer in a Blue Hard Case. This handy little piece of equipment tests a gemstone's ability to slow down or bend light. The amount of slowing down it does to a beam of light is called the refractive index. THIS UNIT WILL HELP YOU DETERMINE WHICH GEMS ARE REAL AND WHICH ONES ARE FAKES!
THIS UNIT HAS IT'S OWN INTERNAL LIGHT SOURCE AND A SLOT FOR A FLASHLIGHT!
How does it work?: The refractometer works by the use of a glass hemicylinder inside that has a flat surface extending into the body of the refractometer. When light is introduced into the back of the unit, it travel through the glass hemicylinder and up to the gemstone, where the stone is in optical contact with the glass by use of a refractive index liquid. This liquid keeps air from between the stone and the glass hemicylinder and allows light to travel at the same speed through the glass, gets refracted by the gemstone, and then back through the glass hemicylinder to the viewing lens. The amount of slowing down or bending of the light that the gemstone does to the light beam, causes a light and dark area joined by a thin green line. This green line is the refractive index reading of the gemstone.
* Blue Hardcase
* Polarizing Filter
* Monochromatic Light Filter
* (3) 1.5 Volts AG13/LR44 Button Cell Batteries for Internal LED Light
* Users Guide, BEGINNERS HOW-TO Guide Professionally written
* Gem ID Chart with Refractive Index values
EXTRA FLUID: Add a 10 Gram vial (about 2.5ml) of 1.81 RI Fluid for an additional $59.99. S&H is FREE when shipped with your Refractometer! We have several sizes to choose from! Several Refractive Index values too! Check out our eBay store at www.nisupply.com!
A deal is only a good deal if the quality is excellent and the seller is still around after the sale for any questions you may have!
No ones been selling Gem Refractometers longer than us on eBay!
We ship packages via US Postal's Global Priority Mail/Air Mail for $15.00 ($12.00 to Canada). It takes about 3-8 business days arrive (please note that there can be Customs delays from time to time).
Questions? Larger orders? Please e-mail us!
DO YOU NEED MORE EQUIPMENT? CHECK OUT eBay STORE AT WWW.NISUPPLY.COM FOR EVERYTHING THE GEM ENTHUSIAST NEEDS!
For inquiries about this product, please contact me at the e-mail address below.