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The Ade Advanced Optics Chelsea Filter is a professional-grade gemstone tester designed for gemologists and jewelers. It uses precise deep red (690nm) and yellow-green (570nm) light transmission to differentiate natural from synthetic stones and detect treatments. Its compact, foldable design ensures portability, while durable build quality supports long-term use in labs or fieldwork.





| ASIN | B008U1JBV0 |
| Best Sellers Rank | #120,557 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #41 in Jewelry Diamond Testers |
| Customer Reviews | 4.4 4.4 out of 5 stars (78) |
| Included Components | Arts, Crafts and Sewing^Jewelry Making^jewelry-making-accessories |
| Item Weight | 1.13 ounces |
| Item model number | ChelseaBK |
| Manufacturer | Ade Advanced Optics |
| Product Dimensions | 2 x 2 x 2 inches |
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