{"product_id":"regal-marquise-lab-grown-diamond-solitaire-engagement-ring","title":"Regal Marquise Lab Grown Diamond Solitaire Engagement Ring","description":"\u003ctable\u003e\n\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eReference Design\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eCustomizable\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCenter Diamond\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMarquise Old Mine Cut Lab Grown Diamond · 13.50 × 7.20 mm · Approx. 3.00 ct (Reference)\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\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccent Diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Diamond Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.00 ct (Reference)\u003c\/td\u003e\n\u003ctd\u003eVaries with selected center diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n\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\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFour-Prong Cathedral Basket Solitaire with Wide Comfort Shank\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Polish\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOccasion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEngagement · Anniversary · Bridal\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/table\u003e\n\n\u003ch5\u003eAt a glance\u003c\/h5\u003e\n\n\u003cp\u003eA marquise lab grown diamond solitaire engagement ring from Signora Jewels.\u003c\/p\u003e\n\n\u003cp\u003eThe reference design showcases an approximately 3.00 ct Marquise Old Mine Cut lab grown diamond secured within a classic four-prong cathedral basket. A wide comfort shank balances the elongated center stone while creating a bold, contemporary silhouette. IGI certified.\u003c\/p\u003e\n\n\u003cp\u003eMade to order in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.\u003c\/p\u003e\n\n\u003cp\u003eSelect your preferred center diamond size and precious metal using the options on this page.\u003c\/p\u003e\n\n\u003cp\u003eThe Marquise Old Mine Cut center is elevated within a cathedral basket that allows generous light to pass through the open gallery while protecting each pointed tip. The elongated proportions create exceptional finger coverage and an elegant profile from every angle.\u003c\/p\u003e\n\n\u003cp\u003eA wide comfort shank provides visual balance for the substantial center diamond while offering a confident, comfortable fit. Free from accent stones, every element of the design is dedicated to showcasing the distinctive beauty of the marquise center. Every ring is handcrafted to order by Signora Jewels.\u003c\/p\u003e\n\n\u003ch5\u003eDesign Highlights\u003c\/h5\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eCustomizable Marquise Old Mine Cut Lab Grown Diamond from 1 ct to 4.5 ct\u003c\/li\u003e\n\n\u003cli\u003eFour-prong cathedral basket\u003c\/li\u003e\n\n\u003cli\u003eWide comfort shank\u003c\/li\u003e\n\n\u003cli\u003eOpen gallery construction\u003c\/li\u003e\n\n\u003cli\u003eClassic solitaire design\u003c\/li\u003e\n\n\u003cli\u003eHigh polish finish\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003cp\u003eBrowse our \u003ca href=\"\/collections\/marquise-engagement-rings\"\u003eMarquise Engagement Rings\u003c\/a\u003e, explore the \u003ca href=\"\/pages\/engagement-ring-guide\"\u003eEngagement Ring Guide\u003c\/a\u003e, or compare precious metals in our \u003ca href=\"\/pages\/metal-guide\"\u003eMetal Guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch5\u003eDiamond Details\u003c\/h5\u003e\n\n\u003ctable\u003e\n\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\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReference Center Diamond\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMarquise Old Mine Cut Lab Grown Diamond · 13.50 × 7.20 mm · Approx. 3.00 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccent Diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReference Total Diamond Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.00 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Center Sizes\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\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\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eThe measurements shown represent the photographed reference model. Final proportions vary according to the selected center diamond.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch5\u003eAbout Lab Grown Diamonds\u003c\/h5\u003e\n\n\u003cp\u003eThe Marquise Old Mine Cut combines elongated elegance with distinctive faceting that emphasizes both brilliance and character. The clean solitaire setting allows the center diamond to remain the unmistakable focal point while the wide comfort shank provides modern balance.\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 with warm water, mild soap and a soft brush to maintain brilliance and preserve the polished finish.\u003c\/p\u003e\n\n\u003ch5\u003eFAQ\u003c\/h5\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy does this ring use a wide comfort shank?\u003c\/strong\u003e\u003cbr\u003e\nThe broader shank balances the larger marquise center while providing a comfortable fit and a substantial feel.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I choose a different center diamond size?\u003c\/strong\u003e\u003cbr\u003e\nYes. This design is available with center diamond sizes from 1 ct through 4.5 ct.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the cathedral basket benefit the center diamond?\u003c\/strong\u003e\u003cbr\u003e\nThe cathedral basket securely supports the marquise diamond while allowing light to enter through the open gallery for enhanced brilliance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this solitaire suitable for everyday wear?\u003c\/strong\u003e\u003cbr\u003e\nYes. The four-prong cathedral basket and wide comfort shank are designed to provide lasting security and comfortable daily wear.\u003c\/p\u003e","brand":"Signora Jewels","offers":[{"title":"Silver \/ 1 ct","offer_id":58581800648864,"sku":"SJ\/DR\/LGRG0958","price":412.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 1.5 ct","offer_id":58581808545952,"sku":"SJ\/DR\/LGRG0958","price":591.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2 ct","offer_id":58581808578720,"sku":"SJ\/DR\/LGRG0958","price":796.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2.5 ct","offer_id":58581808611488,"sku":"SJ\/DR\/LGRG0958","price":1026.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 3 ct","offer_id":58581808644256,"sku":"SJ\/DR\/LGRG0958","price":1281.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 3.5 ct","offer_id":58581808677024,"sku":"SJ\/DR\/LGRG0958","price":1560.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 4 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