{"product_id":"gold-silver-testing-kit-touchstone","title":"Gold \u0026 Silver Testing Kit – Touchstone \u0026 Testing Solutions ( shipping only available in Europe)","description":"\u003cp\u003eAccurately test gold and silver using the traditional touchstone method with this professional Gold \u0026amp; Silver Testing Kit, designed for jewellers, goldsmiths, refiners, pawnbrokers, precious-metal buyers and jewellery workshops.\u003c\/p\u003e\n\u003cp\u003eThe complete set contains gold testing solutions for 8ct, 14ct, 18ct and 21.6ct gold, together with a silver testing solution calibrated to 800 standard, a high-quality touchstone and Kontrasol cleaning solution.\u003c\/p\u003e\n\u003cp\u003eThe touchstone testing method provides a practical way to assess precious-metal purity and helps distinguish solid gold from gold-plated items. By progressing through the different gold testing solutions and observing the reaction of the test mark, the user can determine whether the gold content falls below a particular carat level.\u003c\/p\u003e\n\u003cp\u003eCompact, practical and straightforward to use, this kit provides the essential tools required for traditional gold and silver purity testing in a professional jewellery or goldsmithing environment.\u003c\/p\u003e\n\u003cp\u003eKit Contents\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8ct Gold Testing Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e14ct Gold Testing Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e18ct Gold Testing Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e21.6ct Gold Testing Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSilver Testing Solution – 800 Standard\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Touchstone\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eKontrasol Cleaning Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a Touchstone Gold Test?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTouchstone testing is a traditional method used by jewellers, goldsmiths and precious-metal professionals to evaluate gold and silver.\u003c\/p\u003e\n\u003cp\u003eThe metal being examined is rubbed against a testing stone to leave a visible streak. A testing solution corresponding to a particular gold carat is then applied to the mark.\u003c\/p\u003e\n\u003cp\u003eThe reaction of the streak helps the user assess whether the metal is above or below the purity level associated with that testing solution.\u003c\/p\u003e\n\u003cp\u003eBecause the kit includes several different gold solutions, testing can progress through 8ct, 14ct, 18ct and 21.6ct to help narrow down the approximate purity of the item.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Use the Gold Testing Kit\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e1. Prepare the Metal\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eLightly file or rasp the surface of the item being tested to expose the underlying metal.\u003c\/p\u003e\n\u003cp\u003eThis is particularly important when checking whether an item is solid gold or gold plated, as testing only the outer surface of a plated item may produce a misleading result.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e2. Create a Mark on the Touchstone\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eRub the prepared metal firmly against the clean touchstone using a clean, sharp downstroke.\u003c\/p\u003e\n\u003cp\u003eThe metal should leave a clear test mark on the surface of the stone.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e3. Apply the Gold Testing Solution\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBegin with the lower-carat solution and progress upward as required:\u003c\/p\u003e\n\u003cp\u003e8ct solution – reacts with metals below 8ct\u003cbr\u003e14ct solution – reacts with metals below 14ct\u003cbr\u003e18ct solution – reacts with metals below 18ct\u003cbr\u003e21.6ct solution – reacts with metals below 21.6ct\u003c\/p\u003e\n\u003cp\u003eObserve the test mark after applying the appropriate solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIf the mark reacts or begins to foam, the gold content is below the carat level of the testing solution being used.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy working progressively through the solutions, you can more accurately assess the approximate gold purity of the item.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTesting Silver\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe same touchstone testing principle can be used for silver with the included silver testing solution calibrated to 800 standard.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrepare the item, create a test mark on the touchstone and apply the appropriate silver testing solution according to the same basic procedure.\u003c\/li\u003e\n\u003cli\u003eCleaning the Touchstone: Proper cleaning helps keep the testing surface ready for subsequent tests.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter testing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCarefully rinse the touchstone with water.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eApply Kontrasol cleaning solution to the stone.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClean the surface gently using a soft cloth.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAllow the touchstone to dry before the next test.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRegular cleaning removes previous test marks and residues, helping maintain a clean surface for repeatable testing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKey Features\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional gold and silver testing kit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTraditional touchstone precious-metal testing method\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTests multiple gold purity levels\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e8ct, 14ct, 18ct and 21.6ct gold testing solutions included\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e800 silver testing solution included\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-quality touchstone supplied\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes Kontrasol for cleaning and maintaining the touchstone\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHelps distinguish solid gold from gold-plated items\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProgressive testing method helps estimate gold purity\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuitable for professional workshop and trade use\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptional testing stars can be used for comparison\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplete and convenient testing set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Testing Note: \u003c\/strong\u003eTouchstone testing is a comparative testing method and results depend on correct surface preparation, application and interpretation. Plated, filled, coated or unusual alloys can affect results. Where exact precious-metal composition is required, results should be confirmed using an appropriate professional analytical method.\u003c\/p\u003e\n\u003cp\u003eTesting solutions should be handled carefully and used in accordance with the applicable product safety instructions.\u003c\/p\u003e","brand":"DAVTOOLS","offers":[{"title":"Default Title","offer_id":45052627747137,"sku":"TET-3510","price":95.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/0718\/9569\/files\/TESTKIT.jpg?v=1765132237","url":"https:\/\/davtools.com\/products\/gold-silver-testing-kit-touchstone","provider":"DAVTOOLS","version":"1.0","type":"link"}