Monochromatic Light Filter Gem Refractometer Gemological Gemstone 1.81 RI Oil For Sale

Gemological Gemstone Refractometer LED Monochromatic Light Filter 1.81 RI Oil

Description :

Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones. This Gemological refractometer is a low cost, lightweight measuring instrument used by jewellers and traders of gemstones to measure polished stones over a refractiveindex range of 1.30 to 1.81 RI. The instrument can also be used to identify whether a particular stone is Isotropic or Anistropic (uniaxial or biaxial).Gemological (Gemstone) Refractometer is your primary and most powerful tool in gemstone identification. As with a typical critical angle refractometer, it will measure the Refractive Index of faceted stones.FEATURES:

• Can identify singly & doubly gemstones quickly and accurately
• Uniquely designed, low battery consumption and portable
• Approved by strict quality and safety standards for long and trouble-free life
• Guaranteed high quality and accurate testing results
• Brand new and unused

SPECIFICATIONS:

• Measuring Range: 1.30 – 1.81 RI
• Minimum Graduation Value: 0.01 RI
• Dimension: 30 x 70 x 130mm
• Weight: 400g

SET COMPRISE:

• 1 x Gem Refractometer
• 1 x Polarizing Filter
• 1 x2ml Vial of 1.800 Refractive Index Oil
• 1 x Monochromatic Light Filter
• 1 x Mini Flashlight
• 1 x 1.5V AAA Battery
• 1 x Storage Box
• 1 x Refractometer Index Reference List
  (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.)
• 1 x Quick Start Guide
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