{"product_id":"platinum-3-stone-square-ring-mounting-5-75mm-center-3-5mm-sides","title":"Platinum 3-Stone Square Ring Mounting-Square 5.75mm Center Stone with Two-3.5mm Square Sides","description":"\u003cp\u003eThis platinum 3-stone ring mounting is designed for a square center stone measuring 5.75 mm, flanked by two square side stones at 3.5 mm each. Cast and hand polished, it arrives ready for setting and sizing—making it an efficient choice for jewelers building finished pieces from quality findings. The mounting is fabricated from platinum composed of 95% platinum and 5% ruthenium, delivering the durability and prestige metal professionals and their clients expect.\u003c\/p\u003e\n\n\u003cp\u003eProduced by America's largest family-owned findings manufacturer, this mounting is made in the USA from responsibly sourced platinum. The casting and hand-polishing process ensures clean lines and a surface finish that is bench-ready upon arrival.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSquare 5.75 mm center stone seat paired with two 3.5 mm square side stone seats\u003c\/li\u003e\n\u003cli\u003eCast construction with hand-polished finish—ready for setting and sizing\u003c\/li\u003e\n\u003cli\u003ePlatinum alloy: 95% platinum, 5% ruthenium\u003c\/li\u003e\n\u003cli\u003eMade in the USA from responsibly sourced platinum\u003c\/li\u003e\n\u003cli\u003eProduced by America's largest family-owned findings manufacturer\u003c\/li\u003e\n\u003cli\u003eStandard USA ring size: 5-1\/2\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMetal\u003c\/th\u003e\n\u003ctd\u003ePlatinum (95% platinum, 5% ruthenium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCenter Stone Size\u003c\/th\u003e\n\u003ctd\u003e5.75 mm square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSide Stone Size\u003c\/th\u003e\n\u003ctd\u003e3.5 mm square (2 stones)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Carat Weight Range\u003c\/th\u003e\n\u003ctd\u003e0.29 ct–1.11 ct (diamond weights)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing Size\u003c\/th\u003e\n\u003ctd\u003e5-1\/2 (standard USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eHand polished, ready for setting and sizing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll carat weight references are in diamond weights.\u003c\/li\u003e\n\u003cli\u003eMounting arrives at standard USA ring size 5-1\/2 and is suitable for sizing by the bench jeweler.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584113737942,"sku":"95B-509","price":949.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/platinum-3-stone-square-ring-mounting-square-5-75mm-center-stone-with-two-3-5mm-square-sides-otto-frei.jpg?v=1719956385","url":"https:\/\/www.ottofrei.com\/products\/platinum-3-stone-square-ring-mounting-5-75mm-center-3-5mm-sides","provider":"Otto Frei","version":"1.0","type":"link"}