ADE Advanced Optics Chelsea Filter – Gemstone Identification Tool for Emerald, Jadeite, Green & Gem Stones Testing – Professional Jewelers Compact Folding Filter
Product Description
ADE Advanced Optics Chelsea Filter – Gemstone Identification Tool for Emerald, Jadeite, Green & Gem Stones Testing – Professional Jewelers Compact Folding Filter
- PROFESSIONAL GEMSTONE IDENTIFICATION TOOL – This Chelsea filter helps jewelers and collectors quickly identify gemstones by observing color reactions in red, blue, and green stones. Use it to inspect emerald, jadeite, ruby, and other gem stones with a compact, easy-carry design.
- DETECTS NATURAL VS SYNTHETIC STONES – Designed for gemstone testing, this tool helps determine whether a stone is natural or synthetic by revealing subtle color shifts. Ideal for jewelers using refractometer methods, loupes, and magnifiers during stone identification.
- RELIABLE FOR SPINEL & DYE DETECTION – A trusted filter for detecting Synthetic Blue Spinel and spotting dyes in certain gemstones. Its accuracy makes it a valuable companion to a dichroscope, gem loupe, magnifying glass, or professional magnifier kit.
- EASY TO USE FOR FAST GEM CHECKING – This is a must have proffesional tool in gemology testing. We recommend read a book, take a class or consult with a gemlogist of how to identify gemstones. Simply shine light on the gemstone, view through the Chelsea filter, and watch for color changes that reveal composition clues. This quick, handheld method works well alongside a folding loupe, hand lens, or jeweler’s tools.
- COMPACT & TRAVEL-FRIENDLY FOR JEWELERS – The folding design protects the lens and fits neatly into a pocket, making it perfect for jeweler travel kits, coin inspection, or gemstone shows. Ideal for gem stones testing, jewellery hobbyists, and professional jewelers.
This gemological tool is helpful for identifying certain red, blue and green gemstones. It is used to determine whether a gemstone is natural or synthetic and can also be used for detecting Synthetic Blue Spinel as well as for detecting dyes in certain gemstones. The Chelsea Filter is a popular Gemological Dichromatic Filter that was originally devised by Anderson and Payne in 1934 at the Gem Testing Laboratory of the London Chamber of Commerce. The filter was devised with the collaboration of gemology students of the Chelsea College of Science and Technology. As this filter allowed transmission of both deep red wavelengths around 690 nm and yellow-green wavelengths, around 570 nm, that matched an Emerald's emission and absorption characteristics, it was initially recommended to assist the discrimination between natural emerald and its simulants such as Green Glass, Tourmaline, Peridot, etc. This discrimination was possible because Chromium - containing Iron - and Vanadium-Free Emeralds emitted a red fluorescence when illuminated by white light that had a content of ultraviolet wavelengths.
Technical Specifications
You might also like
TekcoPlus Heavy Duty New Calcite Dichroscope Two Pleochroic Colors Gemstone Identification
Calcite Dichroscope
Gem Identification Made Easy (6th Edition): A Hands-On Guide to More Confident Buying & Selling
SE 860PT 4.5" Pick-Up Tool with 4 Prongs
Chelsea and Synthetic Emerald Testers Made Easy: The "RIGHT-WAY" Guide to Using Gem Identification Tools (The "RIGHT-WAY" Series to Using Gem Identification Tools)
Dichroscopes Made Easy: The "RIGHT-WAY" Guide to Using Gem Identification Tools (The "RIGHT-WAY" Series to Using Gem Identification Tools)
Synthetic Emerald Filter
SE TW2-407 6-Piece Diamond Tweezers Set
10x 18mm Handheld Darkfield Loupe with Flashlight
Gemstones of the World: Newly Revised Fifth Edition