Ade Advanced Optics Chelsea Filter – Professional Gemstone Tester for Gem Identification, Jewelry & Diamond Testing – Jewelers Loupe Tool for Sapphire, Aquamarine & Stones
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Apr 29
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Features
- ACCURATE GEMSTONE AUTHENTICATION The Ade Advanced Optics Chelsea Filter is a specialized tool designed to help gemologists differentiate between natural and synthetic gemstones, such as emeralds, aquamarine, and blue spin
- HIGH-QUALITY OPTICAL PERFORMANCE Crafted with precision, this filter transmits deep red (690nm) and yellow-green (570nm) light, enabling clear differentiation of gemstones based on their fluorescence.
- PORTABLE AND USER-FRIENDLY Its compact, foldable design ensures easy portability, making it convenient for gemologists to carry and use in various settings, from laboratories to fieldwork.
- ESSENTIAL FOR DETECTING TREATMENTS AND ENHANCEMENTS Ideal for identifying dyed or treated stones, the Chelsea Filter aids in spotting enhancements in gemstones, ensuring accurate assessments during appraisals.
- DURABLE AND LONG-LASTING Built to withstand regular use, this filter is a reliable addition to any gemologist's toolkit, ensuring consistent performance over time.
Product Dimensions: 2 x 2 x 2 inches
Item Weight: 1.13 ounces
Manufacturer: Ade Advanced Optics
Item model number: ChelseaBK
Assembly required: No
Batteries required: No
Included Components: Arts, Crafts and Sewing^Jewelry Making^jewelry-making-accessories
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Apr 29
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Great Chelsea filter for gemology! Highly recommend if you need something affordable and effective. Very sturdy leather case too!
Reviewed in the United States on March 17, 2026 by Allan Perkins
Came on time and packaged very nicely.
Reviewed in the United States on February 24, 2026 by nsp99
The Ade Advanced Optics Chelsea Filter is an outstanding piece of professional equipment, earning every one of its five stars. As a tool essential for quick and reliable gemstone identification, its performance is flawless, but what truly elevates this purchase is the excellent overall package. Firstly, this filter is priced well for the professional quality it delivers. You receive an accurate, reliable filter without the exorbitant cost often associated with specialized gemological instruments. Secondly, the included nice case provides robust protection, ensuring the delicate optics are safe whether you're working in the lab or in the field. The case is compact, sturdy, and adds to the professional feel of the whole kit. The filter itself provides sharp, clear resolution, allowing for precise observation of color reactions critical for distinguishing natural, synthetic, and treated stones. If you work in jewelry or gem identification, this filter is a highly valuable, durable, and affordable addition to your testing toolkit.
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Reviewed in the United States on November 24, 2025 by Winston
Great filter. Has already saved me money with people selling fake emeralds and ruby's.
Reviewed in the United States on May 5, 2025 by Joseph Moroschak
This is the first Chelsea filter I've owned so I don't have anything to really compare it to. Overall, I really like this and have been using it to test some gems in my collection. The only thing that is frustrating for me personally is that if you try to look through it in the same way you would a loupe it is very blurry. I have to hold it at a distance (about 4 to 6 inches away from my eye) to see the gem clearly, but then I wonder if I am seeing the color of the gem through the lens properly since it is relatively far away. But like I said, this is the first one I've owned so I'm not sure if they are all blurry up close. Still happy I got it and am having fun using it!
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Reviewed in the United States on March 26, 2020 by S. E.
A very high quality product. Made of steel. Arrived quickly and intact. A must have product.
Reviewed in the United States on April 30, 2024 by Tsuriel
If you know how to use it. I is a great tool to have in your tool box. Caution! If you do not know how to use it, do not buy it. It will get you into more trouble than it is worth.
Reviewed in the United States on March 24, 2014 by Dan King
I love this little filter. I love knowing that I will never buy fake blue lapis again! If you go online you can find a chart that will help you to identify if the gem is real or not. YOU ALSO HAVE TO HAVE A REALLY GOOD LIGHT SOURCE IN ORDER TO SEE THE COLOR DIFFERENCES. Once you get that light source it's obvious if the gem is real or not. Very good product.
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Reviewed in the United States on June 10, 2022 by LS