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gemstone tester
Selling leads|
Portable With Monochromatic Light Filter Gemological Testing Instrument FGR-003A Model number: FGR-003A Type Testers & Measurements Testing scale 1.35...
2026-04-29 00:03:01
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....It can test the gem refractive index easy,fast,and without spoilage,it can also test the gemstones’ luster Model number: FGR-003 Type Testers & ...
2026-04-29 00:03:01
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Index Of Refraction Testing Instruments For Inlaid Gemstone FGR-002J Model number: FGR-002J Type Testers & Measurements Testing scale 1.35-1.85 ...
2026-04-29 00:03:01
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