Portable Gemstone Refractometer for Jewelry Identification B - Black, 1.30-1.81 RI

• PRECISE RI MEASUREMENT: Identify gemstones accurately within the 1.30 to 1.81 range using this reliable Gem Refractometer for clear results
• PROFESSIONAL GEMSTONE ANALYSIS: Determine birefringence and for crystal type with these essential Gemstone Instruments for expert jewelry appraisal
• PORTABLE FIELD DESIGN: Carry this lightweight Detectors kit easily to any location for convenient on-site testing without bulk
• COMPLETE TESTING KIT: Includes refractive oil and flashlight to insure immediate operation for both beginners and professional jewelers
• LONG LASTING CONSTRUCTION: Built from sturdy materials to forestall wear and provide consistent performance for years of daily use

Features:
* and
*Made of - materials, sturdy and
*Various gemstones can be determined based on their refractive index, because different gemstones have fixed refractive indexes.
*In addition, birefringence can be measured.
*This parameter can be used to determine whether a gemstone is a uniaxial or biaxial for crystal.
*This gemstone refractometer is small and lightweight. Unique design, extremely low power consumption and easy to carry.
*Easy to carry and very popular in the jewelry industry.
*Tested to strict quality and safety standards for long, trouble-free for service life.
*-, high- for measurement results.

Specification:
*Name: Gem Refractometer
*Colour: Black
*Measurement range: 1.30~1.81RI.
*Minimum graduation value: 0.01RI.
*Size: 30*70*130mm.
*Application for scope: pendants, bracelets, gemstones

*Model：A(1X Gem Refractometer+flashlight+refractive oil)，B（1Xflashlight）

Package Included:
1X Gem Refractometer.
1X flashlight
1X refractive oil

or

1*flashlight