{"product_id":"gold-test-stone-2x3","title":"GOLD TEST STONE 2X3","description":"\u003cp data-start=\"503\" data-end=\"897\"\u003eThis \u003cstrong data-start=\"508\" data-end=\"538\"\u003e2″ × 3″ Gold Testing Stone\u003c\/strong\u003e is a professional jewelry testing tool used to determine the karat purity of gold, silver, and platinum when used with testing acids. The finely grained black stone surface allows metals to leave a visible streak, enabling jewelers to apply testing solutions and observe the chemical reaction to identify metal purity. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"899\" data-end=\"1124\"\u003eGold testing stones—often called \u003cstrong data-start=\"932\" data-end=\"947\"\u003etouchstones\u003c\/strong\u003e—have been used for centuries to verify precious metal purity by comparing the reaction of the metal streak with specific acid solutions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1126\" data-end=\"1267\"\u003eCompact and durable, the \u003cstrong data-start=\"1151\" data-end=\"1167\"\u003e2″ × 3″ size\u003c\/strong\u003e is a standard bench tool for jewelry repair shops, pawn shops, refiners, and precious-metal buyers.\u003c\/p\u003e\n\u003chr data-start=\"1269\" data-end=\"1272\"\u003e\n\u003ch2 data-start=\"1274\" data-end=\"1289\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"1291\" data-end=\"1550\"\u003e\n\u003cli data-start=\"1291\" data-end=\"1336\"\u003e\n\u003cp data-start=\"1293\" data-end=\"1336\"\u003e\u003cstrong data-start=\"1293\" data-end=\"1336\"\u003e2″ × 3″ professional gold testing stone\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1337\" data-end=\"1393\"\u003e\n\u003cp data-start=\"1339\" data-end=\"1393\"\u003eUsed with \u003cstrong data-start=\"1349\" data-end=\"1393\"\u003egold, silver, and platinum testing acids\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1394\" data-end=\"1448\"\u003e\n\u003cp data-start=\"1396\" data-end=\"1448\"\u003eFinely grained black surface for clear metal streaks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1449\" data-end=\"1494\"\u003e\n\u003cp data-start=\"1451\" data-end=\"1494\"\u003eDurable stone designed for repeated testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1495\" data-end=\"1550\"\u003e\n\u003cp data-start=\"1497\" data-end=\"1550\"\u003eEssential tool for jewelers and precious-metal buyers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1552\" data-end=\"1555\"\u003e\n\u003ch2 data-start=\"1557\" data-end=\"1572\"\u003eApplications\u003c\/h2\u003e\n\u003cul data-start=\"1574\" data-end=\"1731\"\u003e\n\u003cli data-start=\"1574\" data-end=\"1603\"\u003e\n\u003cp data-start=\"1576\" data-end=\"1603\"\u003eTesting gold karat purity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1604\" data-end=\"1639\"\u003e\n\u003cp data-start=\"1606\" data-end=\"1639\"\u003eIdentifying gold-plated jewelry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"1665\"\u003e\n\u003cp data-start=\"1642\" data-end=\"1665\"\u003eScrap gold evaluation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1666\" data-end=\"1698\"\u003e\n\u003cp data-start=\"1668\" data-end=\"1698\"\u003eJewelry repair and appraisal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1699\" data-end=\"1731\"\u003e\n\u003cp data-start=\"1701\" data-end=\"1731\"\u003ePawn shop and refinery testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1733\" data-end=\"1736\"\u003e\n\u003ch2 data-start=\"1738\" data-end=\"1763\"\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul data-start=\"1765\" data-end=\"1938\"\u003e\n\u003cli data-start=\"1765\" data-end=\"1811\"\u003e\n\u003cp data-start=\"1767\" data-end=\"1811\"\u003eProduct Type: Precious metal testing stone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1812\" data-end=\"1833\"\u003e\n\u003cp data-start=\"1814\" data-end=\"1833\"\u003eSize: \u003cstrong data-start=\"1820\" data-end=\"1831\"\u003e2″ × 3″\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1834\" data-end=\"1877\"\u003e\n\u003cp data-start=\"1836\" data-end=\"1877\"\u003eMaterial: N\u003cspan\u003eatural Obsidian\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1878\" data-end=\"1938\"\u003e\n\u003cp data-start=\"1880\" data-end=\"1938\"\u003eUse: Acid scratch testing for gold, silver, and platinum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JSP","offers":[{"title":"Default Title","offer_id":52275996131617,"sku":"GT34","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/4671\/9910\/files\/baa5cf6b31782102d17d389f3fa92dee.image.132x120.jpg?v=1772744040","url":"https:\/\/www.hps1source.com\/products\/gold-test-stone-2x3","provider":"Hps1source","version":"1.0","type":"link"}