{"product_id":"750-hallmark-stamp-ring-stamping-machine-marking-pliers","title":"Hallmark Stamp .750 For Ring Stamping Machine \u0026 Jewelry Marking Pliers","description":"\u003cp\u003eThe \u003cstrong\u003e.750 Hallmark Stamp\u003c\/strong\u003e is designed for use with both ring stamping machines and jewelry marking pliers, securing firmly in place via a set-screw for consistent, repeatable impressions. The stamp face is \u003cstrong\u003eslightly radiused\u003c\/strong\u003e to conform to the interior curve of ring shanks, ensuring clean, legible marks on rounded surfaces. Impression height is \u003cstrong\u003e0.80 mm\u003c\/strong\u003e unless otherwise noted.\u003c\/p\u003e\u003cp\u003eIn European hallmarking standards, \u003cstrong\u003e.750\u003c\/strong\u003e denotes \u003cem\u003e18k gold\u003c\/em\u003e — the designation indicating 750 parts per thousand pure gold. This stamp allows jewelers and metalsmiths to apply the appropriate fineness mark directly to finished or in-progress ring work with precision and efficiency.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCompatible with ring stamping machines and jewelry marking pliers\u003c\/li\u003e\n\u003cli\u003eSecured by a set-screw for stable, repeatable positioning\u003c\/li\u003e\n\u003cli\u003eSlightly radiused stamp face designed for the interior of rings\u003c\/li\u003e\n\u003cli\u003eImpression height: 0.80 mm (unless otherwise noted)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.750\u003c\/strong\u003e mark — European standard designation for 18k gold\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eImpression Height\u003c\/th\u003e\n\u003ctd\u003e0.80 mm (unless otherwise noted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHallmark Designation\u003c\/th\u003e\n\u003ctd\u003e.750 (European standard for 18k gold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Method\u003c\/th\u003e\n\u003ctd\u003eSet-screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFace Profile\u003c\/th\u003e\n\u003ctd\u003eSlightly radiused for ring interiors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Tools\u003c\/th\u003e\n\u003ctd\u003eRing stamping machines and jewelry marking pliers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43580788703446,"sku":"155.364","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/750-stamp-for-ring-stamping-machine-and-jewelry-marking-plier-otto-frei.jpg?v=1719957983","url":"https:\/\/www.ottofrei.com\/products\/750-hallmark-stamp-ring-stamping-machine-marking-pliers","provider":"Otto Frei","version":"1.0","type":"link"}