Defective 8PCS Optical Glass Trapezoid Mirror Prism Rainbow Physics Teaching

Physics Teaching Refracted Light Spectrum Experiment 

Material: Optical Glass 
Color: Transparent with refector mirror
Size: About 19x11x8mm
Quantity: 8 PCS
Can be use as a Decoration or to Research

Attention:
Slightly defective as picture shown.
There are some defective prisms from factory, they can't be used on optics and projector, 
but can be used as teaching tools or research and decorations, they are very beautiful!!

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