Gemstone GEM Refractometer - Gemology Gemologist + 1.81 RI Fluid

Item Description: RGM-700 Portable Gemological Refractometer w/ a 1.8ml Vial of 1.81 RI Fluid Comes with instructions! Written by our staff, not converted from another language! Comes with a Gemstone Refractive Index Chart! Comes in a black …