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The Ade Advanced Optics Chelsea Filter is a professional-grade gemstone tester that uses precise dual-wavelength light (690nm red and 570nm yellow-green) to differentiate natural from synthetic stones and detect treatments. Its compact, foldable design ensures portability for gemologists in labs or fieldwork, while its durable build guarantees long-term reliability.





| ASIN | B008U1JBV0 |
| Assembly required | No |
| Batteries required | No |
| Best Sellers Rank | #110,775 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #40 in Jewelry Diamond Testers |
| Customer Reviews | 4.3 4.3 out of 5 stars (74) |
| 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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