Micrometer Caliper
Gem Refractometer
Spectroscope
10-30X or 20-40X Gem Microscope
Ultraviolet Lamp
Digital Gem Refractometer
Microscope
Handheld Prism Spectroscop
Camera Microscope
Handheld Grating Spectroscop
Cold Light Source
Hand Microscope with Light
Pen Microscope with Light
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Microscope with Light