{"product_id":"platinum-3-stone-square-ring-mounting-6-5mm-center-4mm-sides","title":"Platinum 3-Stone Square Ring Mounting-Square 6.5mm Center Stone with Two-4mm Square Sides","description":"\u003cp\u003eThis platinum 3-stone ring mounting is designed for a classic square stone configuration, featuring a 6.5 mm center stone position flanked by two 4 mm square side stone seats. Cast and hand polished, the mounting arrives ready for setting and sizing, making it an efficient choice for professional jewelers building finished pieces or working with clients on custom designs.\u003c\/p\u003e\u003cp\u003eCrafted in the USA by America's largest family-owned findings manufacturer, this mounting is made from responsibly sourced platinum—specifically a 95% platinum and 5% ruthenium alloy—delivering the density, durability, and prestige that platinum settings demand. The standard USA ring size of 5-1\/2 provides a reliable starting point for sizing to fit.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSquare 3-stone mounting with 6.5 mm center and two 4 mm side stone seats\u003c\/li\u003e\n\u003cli\u003eCast and hand polished — ready for setting and sizing\u003c\/li\u003e\n\u003cli\u003ePlatinum alloy composition: 95% platinum, 5% ruthenium\u003c\/li\u003e\n\u003cli\u003eMade in the USA by America's largest family-owned findings manufacturer\u003c\/li\u003e\n\u003cli\u003eResponsibly sourced platinum\u003c\/li\u003e\n\u003cli\u003eStandard USA ring size 5-1\/2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCenter Stone Size\u003c\/th\u003e\n\u003ctd\u003e6.5 mm square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSide Stone Size\u003c\/th\u003e\n\u003ctd\u003e4 mm square (two stones)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Carat Weight Range\u003c\/th\u003e\n\u003ctd\u003e0.39 ct – 1.50 ct (diamond weights)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing Size\u003c\/th\u003e\n\u003ctd\u003eStandard USA 5-1\/2\u003c\/td\u003e\n\u003c\/tr\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\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eHand polished\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\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eAll carat weights are expressed in diamond weights. This mounting is supplied ready for stone setting and sizing. Stones are not included.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43584111018198,"sku":"95B-508","price":938.92,"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-6-5mm-center-stone-with-two-4mm-square-sides-otto-frei.jpg?v=1719956385","url":"https:\/\/www.ottofrei.com\/ja\/products\/platinum-3-stone-square-ring-mounting-6-5mm-center-4mm-sides","provider":"Otto Frei","version":"1.0","type":"link"}