Gem Refractometer GI-181-2
Product Description
Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones. The GI-181-2 Gemological refractometer is a low cost, lightweight measuring instrument used by jewellers and traders of gemstones to measure polished stones over a refractive index 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. It comes with Refractometer Index oil, Mini Flashlight, Storage Box, Polarizing Lens and Leather Carrying Case! 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.
Guarantee: Offers 2 YEARS WARRANTY
Specifications:
- Measuring Range: 1.30 - 1.81 RI
- Minimum Graduation Value: 0.01 RI
- Size 30 x 70 x 130mm
- Weight 400g
- Can identify singly & doubly gemstones quickly and accurately
- With Built-in Monochromatic Light
- Uniquely Design, HEAVY-DUTY and Built to last
- Convenient & easy to carry
- 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 complete with newly improve light source, batteries, storage box, polarizing filter, monochromatic light filter, index oil, index reference list and user's manual and a Leather Carrying Case
Accessories included:
FREE Leather Carrying Case**1 bottle of 1.800 Refractive Index Oil**Polarizing Filter**Monochromatic Light Filter**Mini Flashlight**4 pieces 1.55V AG13 Batteries**Storage Box**Refractometer Index Reference List (For 77 common gemstones, i.e. Calcite, Jadeite, Quartz etc.)**User's Manual
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