digital gemstone refractometer, gemstone refractometers Dual purpose for refractive index and reflectivity Digital display  digital gemstone refractometer    Description The  digital gemstone refractometer is a nice optical...

digital gem refractometer, gemstone refractometers Dual purpose for refractive index and reflectivity Digital display   gemstone refractometers    Description The Digital Gem Refractometer is a nice optical instrument which will give a...

digital gem refractometer, Digital Refractometer Dual purpose for refractive index and reflectivity Digital display   digital gem refractometer    Description The Digital Gem Refractometer is a nice optical instrument which will give a...

Diamond color grading Light diamond grading lamp color grading lamp diamond light Diamond color grading Light, LED light sourcel Fully spectrum continuous band sourcel Energy conservation high light LED cold light source, the light field is stable and...

automatic refractometer, gemstone refractometers Dual purpose for refractive index and reflectivity Digital display   automatic refractometer    Description The Digital Gem Refractometer is a nice optical instrument which will give a...

Handheld Grading gemology spectroscope Grating spectroscope, high resolution Adjustable focus Black appearance Focus distance adjustable gemology spectroscopePortable spectroscopeJewelry instruments -High resolution -Handheld Grating...

Gemstone Lamp * LED cold light source * Color temperature: 6000-7000K * Full continuously spectrum light * Voltage: 100-240 Gemstone Lamp FDL-LED Details of Diamond lamp as following:Diamond lamp is a type of daylight fluorescent lamp:-which color...

Chelsea Filter -made by high quality optic glass -color never fade ,no degumming -frosting aluminium alloy crust Gemstone color filter,Chelsea filter - with high quality optic glass;- excellent spectrlite color filter;fastness and non-lackness;-...

Color filter/Filter -made by high quality optic glass -color never fade ,no degumming -frosting aluminium alloy crust Gemstone color filter,Chelsea filter - with high quality optic glass;- excellent spectrlite color filter;fastness and...

Color filter/Filter -made by high quality optic glass -color never fade ,no degumming -frosting aluminium alloy crust Gemstone color filter,Chelsea filter - with high quality optic glass;- excellent spectrlite color filter;fastness and...