{"title":"Chelsea Filter","description":"","products":[{"product_id":"chelsea-filter-s-lupou-15x-21mm","title":"Chelsea Filter With a 15x magnification Loupe-21mm by AreteTools","description":"\u003cp\u003e\u003cstrong\u003eChelsea Filter with 15x Loupe (21 mm)\u003c\/strong\u003e is a compact professional tool for gemstone inspection. It combines a Chelsea filter with a fully corrected triplet loupe for close visual analysis.\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eName:\u003c\/strong\u003e Chelsea Filter Hand Loupe 15x - 21mm\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eMagnification:\u003c\/strong\u003e 15x\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eLens:\u003c\/strong\u003e 21 mm fully corrected triplet\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.9 x 20.8 mm\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePackaging:\u003c\/strong\u003e leather case and white outer box\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eThe Chelsea Filter is widely used for rapid screening of coloured stones and detection of colour-related anomalies. This model is suitable for gemologists, jewellers, collectors, and training use.\u003c\/p\u003e","brand":"Arete Tools","offers":[{"title":"Default Title","offer_id":48068369318220,"sku":"AT1096","price":975.0,"currency_code":"CZK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/6981\/9980\/files\/243.jpg?v=1714501206"},{"product_id":"jadeite-filter","title":"Jadeite filter","description":"\u003cp\u003eThe jadeite filter is a specially designed gemological tool that is used to identify and distinguish between natural and synthetic gemstones, especially for the detection of certain red, blue and green stones. Also known as the Chelsea Filter, this filter was originally developed by Anderson and Payne in 1934 and is widely recognized for its ability to detect synthetic spinels and colored gemstones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain advantages:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferentiation between natural and synthetic stones:\u003c\/strong\u003e Effectively distinguishes between natural stones and their synthetic imitations, including synthetic spinel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDye detection:\u003c\/strong\u003e It allows identification of the use of dyes in some types of gemstones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal use:\u003c\/strong\u003e The filter can be used at a distance, which makes it possible to view the stones even in windows illuminated by strong light.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse: Filter \u003c\/strong\u003eis ideal for gemologists, jewelers and collectors who need a reliable tool for quick and accurate gem identification when trading or evaluating stones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLimitations:\u003c\/strong\u003e The filter has a limited ability to accurately distinguish between natural and synthetic emeralds, which may require further testing for definitive identification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTest results:\u003c\/strong\u003e The Chelsea Filter has been tested on a wide range of gemstones and has shown high efficiency in identifying synthetic spinels and detecting colored stones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eName: \u003c\/strong\u003eJadeite filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 46.1 x 26.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Leather box and white packaging box\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Arete Tools","offers":[{"title":"Default Title","offer_id":48068438589772,"sku":"AT1115","price":875.0,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/6981\/9980\/files\/129.jpg?v=1714333701"},{"product_id":"chelsea-filter","title":"Chelsea Filter","description":"\u003cp\u003eThe Chelsea Filter is a specialized gemological tool designed for authenticating and distinguishing between real and synthetic gemstones such as emeralds, aquamarines and sapphires. 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The Chelsea Filter is part of a wider range of products designed for mobile gemological laboratories and travel kits, reflecting the company's commitment to providing gemologists with advanced tools.\u003c\/p\u003e","brand":"Arete Tools","offers":[{"title":"Default Title","offer_id":48068471816524,"sku":"AT1095","price":980.0,"currency_code":"CZK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/6981\/9980\/files\/165.jpg?v=1714333938"},{"product_id":"gemologicky-dichroscope","title":"Gemological dichroscope","description":"\u003cp\u003eDichroscope by Arete.Tools\u003c\/p\u003e\n\u003cp\u003eIntroduction:\u003cbr\u003eThe Dichroscope is an essential tool for any gemologist or jewelry professional. This specialized instrument allows the detection of pleochroism and the determination of the optical axis of precious stones, providing valuable information about their quality and potential value. With the help of this tool, you can explore the hidden colors of gemstones and gain a deeper understanding of their unique properties.\u003c\/p\u003e\n\u003cp\u003eMain advantages:\u003cbr\u003ePleochroism detection:: Allows you to visualize the pleochroic colors, which can vary depending on the direction you look at the stone.\u003cbr\u003eDetermining the optical axis: It helps to determine the direction in which the light is distributed in the stone, which is crucial for correct cutting and enhancing the aesthetic value of the gem.\u003cbr\u003eCompact design: Its small size makes it easy to carry and use anywhere.\u003c\/p\u003e\n\u003cp\u003eUse:\u003cbr\u003eThe dichroscope is ideal for gemologists when evaluating tourmaline, sapphire and other birefringent stones. 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This package allows you to set up your own gemstone testing station right in your home and includes all the tools needed to identify gemstones and develop technical skills. It is ideal for taking distance learning courses, developing confidence in testing and identifying gemstones, working at your own pace outside of the classroom, and gaining the essential tools to start a new business.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-Held Diffraction Grating Spectroscope:\u003c\/strong\u003e This spectroscope allows the analysis of light passing through a gemstone, which helps identify its chemical composition and color.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcite Dichroscope:\u003c\/strong\u003e With this dichroscope, you can easily detect the pleochroism of precious stones, which is crucial for their correct classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJadeite Filter:\u003c\/strong\u003e A filter designed to identify jadeite and distinguish genuine precious stones from imitations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand Loupe 10x-21mm with Dual Light White \u0026 UV:\u003c\/strong\u003e Hand magnifier with 10x magnification and dual illumination (white and UV light) for detailed viewing of precious stones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-Held Polariscope:\u003c\/strong\u003e This polariscope is used to identify the birefringent properties of stones, which is useful for distinguishing between synthetic materials and imitations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond cut loupes:\u003c\/strong\u003e A special magnifying glass designed to evaluate the quality of the diamond cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandheld Torch:\u003c\/strong\u003e Hand torch providing the strong light needed for visual inspection and testing of gemstones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTweezers:\u003c\/strong\u003e Tweezers for precise handling of precious stones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e This package is invaluable to gemologists, jewelers and hobby collectors who wish to expand their knowledge and skills in the identification and evaluation of gemstones. It provides the basic tools needed for effective work and study in the field of gemology.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConclusion:\u003c\/strong\u003e The Gem Identification Package is an excellent investment for anyone interested in gemology, whether professionally or as a hobby. It offers a comprehensive set of tools that are essential for everyday work with precious stones and their correct identification and evaluation.\u003c\/p\u003e","brand":"Arete Tools","offers":[{"title":"Default Title","offer_id":48068624089420,"sku":"AT1152","price":7700.0,"currency_code":"CZK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/6981\/9980\/files\/381.jpg?v=1714335603"},{"product_id":"spectroscope","title":"Grating Spectroscope","description":"\u003cp\u003eThe Grating Spectroscope is an indispensable tool for the modern gemologist, especially when working with infrared or near-infrared spectra. This portable visible light spectroscope shows the absorption lines of the elements responsible for creating the color of the stone. For example, it helps distinguish ruby (chromium) from red or pink sapphire (iron).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain advantages:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality spectra:\u003c\/strong\u003e The device produces clear and sharp spectra even when using low-intensity light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact dimensions:\u003c\/strong\u003e A \"lipstick\" sized spectroscope with a fixed focus and slit is ideal for fast and accurate investigations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile use:\u003c\/strong\u003e In addition to gems, you can also examine liquids or flames colored with metallic salts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e The spectroscope requires quality training and a suitable light source for proper operation. Colorless stones do not show an absorption spectrum. 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This hand-held visible light spectroscope reveals the absorption lines of the elements responsible for the color of gems and is indispensable for distinguishing between different species such as rubies and sapphires.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain advantages:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear and bright spectra:\u003c\/strong\u003e Even when using low-intensity light, the spectroscope produces clear and bright spectra.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact dimensions:\u003c\/strong\u003e Its size resembles a lipstick, making this spectroscope very portable, with a fixed focus and slit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducational potential:\u003c\/strong\u003e This tool is excellent for teaching purposes, but requires quality training and a suitable light source for proper results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e Ideal for gemological laboratories and educational institutions, this spectroscope can be used for demonstration not only with gems, but also with liquids or flames colored with metal salts. 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