{"product_id":"cushion-lab-grown-diamond-vintage-engagement-ring","title":"Cushion Lab Grown Diamond Vintage Engagement Ring","description":"\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eIn the photos\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eCustomizable\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCenter diamond\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCushion Old Mine Cut · 10.09 × 7.64 × 5.20 mm · approx. 3.00 ct\u003c\/td\u003e\n\u003ctd\u003e1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccent diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 Round Brilliant · approx. 0.19 ct total\u003c\/td\u003e\n\u003ctd\u003eScale with center\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal diamond weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.19 ct\u003c\/td\u003e\n\u003ctd\u003eVaries with center size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStone type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLab Grown Diamond\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEight-Prong Cathedral Basket with Hand-Engraved Vintage Split Shoulders and Milgrain Detail\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish · Occasion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Polish · Engagement, Anniversary, Bridal\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch5\u003eAt a glance\u003c\/h5\u003e\n\n\u003cp\u003eA cushion Old Mine cut lab grown diamond vintage engagement ring from Signora Jewels.\u003c\/p\u003e\n\n\u003cp\u003eAn approximately 3.00 ct cushion Old Mine cut diamond measuring 10.09 × 7.64 × 5.20 mm is secured in an eight-prong cathedral basket with 32 round brilliant accent diamonds totaling approximately 0.19 ct. IGI certified.\u003c\/p\u003e\n\n\u003cp\u003eMade to order in 11 metals: Silver, 9K\/14K\/18K Gold (Yellow, White and Rose) and Platinum.\u003c\/p\u003e\n\n\u003cp\u003eFree insured express shipping over $500, duties prepaid to the US, UK and Canada, 30-day returns.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEach metal color is shown in the photos. Choose your preferred center diamond weight and metal from the options on this page.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe softly rounded outline of the Old Mine cushion is complemented by hand-engraved split shoulders finished with fine milgrain edges. At \u003cstrong\u003eSignora Jewels\u003c\/strong\u003e, an eight-prong cathedral basket secures the center stone while keeping its broad antique-style facets fully visible. The engraved shoulders taper naturally toward the basket, allowing the center diamond to remain the dominant feature.\u003c\/p\u003e\n\n\u003cp\u003eThe approximately 2.20 mm comfort-fit shank provides balanced support beneath the larger center stone, while thirty-two round brilliant accent diamonds are integrated into the split shoulders for subtle sparkle. The approximately 8.30 mm setting height creates an elevated profile with an open gallery that allows light beneath the center and simplifies routine cleaning.\u003c\/p\u003e\n\n\u003cp\u003eBrowse our \u003ca href=\"\/collections\/engagement-rings\"\u003eengagement rings\u003c\/a\u003e, compare diamond shapes in the \u003ca href=\"\/pages\/diamond-stone-guide\"\u003ediamond stone guide\u003c\/a\u003e, or explore precious metal options in our \u003ca href=\"\/pages\/metal-guide\"\u003emetal guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDesign highlights\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCushion Old Mine cut center shown at approximately 3.00 ct\u003c\/li\u003e\n\u003cli\u003eCustomizable center diamond from 1 ct to 4.5 ct\u003c\/li\u003e\n\u003cli\u003eEight-prong cathedral basket for enhanced security\u003c\/li\u003e\n\u003cli\u003e32 round brilliant accent diamonds totaling approximately 0.19 ct\u003c\/li\u003e\n\u003cli\u003eHand-engraved split shoulders with milgrain detailing\u003c\/li\u003e\n\u003cli\u003eComfort-fit shank approximately 2.20 mm wide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe engraved split shoulders and delicate milgrain details create an heirloom-inspired appearance without surrounding the center stone with a halo. The eight-prong basket highlights the antique proportions of the Old Mine cushion while adding refined visual symmetry from every angle.\u003c\/p\u003e\n\n\u003ch5\u003eDiamond \u0026amp; Ring Details\u003c\/h5\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCenter stone\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCushion Old Mine Cut · 10.09 × 7.64 × 5.20 mm · approx. 3.00 ct (shown)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccent diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 Round Brilliant · approx. 0.19 ct total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal weight \/ count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.19 ct · 33 Diamonds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEight-Prong Cathedral Basket with Hand-Engraved Vintage Split Shoulders and Milgrain Detail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCenter options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Polish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eMeasurements are approximate. Your selected center diamond weight determines the final proportions of the finished ring.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch5\u003eAbout Lab Grown Diamonds\u003c\/h5\u003e\n\n\u003cp\u003eThe Old Mine cut cushion is known for its broad antique-style facets and softly rounded profile that produce larger flashes of light than modern brilliant cuts. Every center diamond is F color, VS1 clarity and IGI certified, selected to complement the vintage proportions of this engraved cathedral design.\u003c\/p\u003e\n\n\u003ch5\u003eMetal, Care \u0026amp; Fit\u003c\/h5\u003e\n\n\u003cp\u003eAvailable in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and along the engraved milgrain shoulders using warm water, mild soap and a soft brush to maintain the brilliance of both the center and accent diamonds.\u003c\/p\u003e\n\n\u003ch5\u003eFAQ\u003c\/h5\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy does this ring use eight prongs instead of four?\u003c\/strong\u003e\u003cbr\u003e\nThe eight-prong basket provides additional support around the larger Old Mine cushion while preserving its rounded outline. The extra prongs also enhance the vintage appearance of the design.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the milgrain detailing add?\u003c\/strong\u003e\u003cbr\u003e\nMilgrain creates a fine beaded edge along the engraved shoulders that reinforces the Art Deco-inspired styling and adds texture without distracting from the center diamond.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this ring be worn with a wedding band?\u003c\/strong\u003e\u003cbr\u003e\nYes. The cathedral basket allows many straight wedding bands to sit close, while vintage-style bands complement the engraved split shoulders and milgrain detailing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich metal color best suits this vintage design?\u003c\/strong\u003e\u003cbr\u003e\nYellow and rose gold enhance the antique-inspired engraving and milgrain finish, while white gold and platinum emphasize the crisp outline of the Old Mine cushion and the eight-prong basket.\u003c\/p\u003e","brand":"Signora Jewels","offers":[{"title":"Silver \/ 1 ct","offer_id":58566556188832,"sku":"SJ\/DR\/LGRG0694","price":433.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 1.5 ct","offer_id":58566565658784,"sku":"SJ\/DR\/LGRG0694","price":612.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2 ct","offer_id":58566565691552,"sku":"SJ\/DR\/LGRG0694","price":817.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2.5 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