The GIA Illuminator Polariscope is the fastest way to test the optical properties of gemstones. Quickly determine whether translucent or transparent gems are singly or doubly refractive.
Resolve optic character in doubly refractive gems, spot pleochroism, and detect diamond strain. Opening at front can double as light source. Includes interference figure sphere. Stone holder mounts on both sides. Stone holder not included Operates on 120v.
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