Desktop LED Light/Flashlight Source for Polariscope / Darkfield Loupe etc

Conoscope Interference Sphere Ball for Polariscope gem

Portable Handheld Polariscope with Desktop Led Light

Gemological Gemstone Gem Refractometer Built-In Light for GIA testing

Gem jewel Loupe! 10x21mm UV/LED Triplet Illuminated Loupe-Dual Light (white&UV)

Calibration Fluid/Liquid for Brix,Salinity,Beer,Clinical,Coolant refractometer

Professional Prism/Prismatic Spectroscope Gem Gemstone Gemological Tool + Case

45-82% Brix ATC Refractometer For Fruit Sugar Testing