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Gem-A education: How to use the polariscope (Gem-A) View |
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Polariscope | Unboxing (Gemstones) View |
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How to build a polariscope with common items to see the stress in different materials (Advanced Tinkering) View |
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Discover the Hidden Stress of Materials with a DIY Polariscope (Wheeler Scientific ) View |
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Polariscope (Gemological Institute of Ceylon) View |
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Gemstones go to Disco! [ Polariscope Tutorial ] (Gemology for Schmucks) View |
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Polariscope 101 (Vic Trabucco) View |
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This Light Lets You See The Strength Of An Object (The Action Lab) View |
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Gem Identification - Polariscope Basic Use (Awaken Crystals) View |
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Polariscope 101 (Vic Trabucco) View |