{"product_id":"foldable-chelsea-jadelite-filter-for-gem-emerald-20mm-diameter-identification-tools-for-gemstone-gemmological-instruments","title":"Folding Chelsea Gemstone Observation Filter","description":"\u003cp\u003eCompare a gemstone's colour response under suitable illumination with a compact folding Chelsea filter.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eAdd a quick visual test\u003c\/strong\u003e - The filter lets you observe a stone's colour response as part of a wider examination.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eKeep the filter protected between checks\u003c\/strong\u003e - The folding case provides a convenient way to cover the viewing element.\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCarry a small optical accessory\u003c\/strong\u003e - A 20 mm filter format fits into a compact gemstone-testing kit.\u003c\/p\u003e\u003ch2\u003eUse the colour response as one clue\u003c\/h2\u003e\u003cp\u003eA Chelsea filter changes the light reaching your eye, allowing certain colour reactions to be compared under the right conditions. Use strong suitable lighting and follow a consistent gemstone-testing method.\u003c\/p\u003e\u003cp\u003eDifferent stones and treatments can produce overlapping responses. The filter supports observation, but it does not prove authenticity or reliably separate every natural stone from every synthetic stone on its own.\u003c\/p\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S2680aa2c7b114bf397f7836ebbce9b32F.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S1642b5ac83c74686836818c841e4b51fx.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S523229973a434a9c94fd97e6f1ea0771J.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S76b8a70a81bb42dfada139fcee4ac7af0.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sbfe3462d7e234dd5aec25e85e829bd365.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S49500d4646354388a1e5e03715a3cbd7i.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S5fdca75c775f42cf8ff6c8e72f9854c0a.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sa8c9e5735a564e6ea0c596f9541cada4b.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S2680aa2c7b114bf397f7836ebbce9b32F.jpg\" slate-data-type=\"image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sdce0db16c8be4afda43c26f3884543d5s.jpg\" slate-data-type=\"image\"\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Chelsea gemstone filter\u003c\/li\u003e\n\u003cli\u003eFilter size reference: 20 mm\u003c\/li\u003e\n\u003cli\u003eFormat: folding case\u003c\/li\u003e\n\u003cli\u003eSuitable illumination and other gemmological tests required\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAdd a portable colour-response check to your gemstone toolkit.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"Default Title","offer_id":63891073007946,"sku":"1005007492448046-Default Title","price":48.27,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/clean-main-16100531896650.png?v=1791817157","url":"https:\/\/spy-shop.com\/products\/foldable-chelsea-jadelite-filter-for-gem-emerald-20mm-diameter-identification-tools-for-gemstone-gemmological-instruments","provider":"Spy-shop.com","version":"1.0","type":"link"}