{"product_id":"marquise-lab-grown-diamond-geometric-engagement-rings","title":"Marquise Lab Grown Diamond Geometric 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\u003eMarquise Brilliant · 10.20 × 5.37 × 3.28 mm · approx. 1.00 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\u003eNone\u003c\/td\u003e\n\u003ctd\u003e—\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. 1.00 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\u003eSix-Prong Open Cathedral Basket with Geometric Split Shank\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 marquise lab grown diamond geometric engagement ring from Signora Jewels.\u003c\/p\u003e\n\n\u003cp\u003eAn approximately 1.00 ct marquise brilliant measuring 10.20 × 5.37 × 3.28 mm is secured in a six-prong cathedral basket within a geometric kite-shaped split shank. 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 elongated marquise brilliant is framed by an open kite-shaped split shank that creates clean geometric lines around the center without enclosing it. At \u003cstrong\u003eSignora Jewels\u003c\/strong\u003e, six prongs secure the pointed tips and curved sides while the cathedral basket lifts the diamond above the band, allowing the full outline to remain visible.\u003c\/p\u003e\n\n\u003cp\u003eThe approximately 1.90 mm comfort-fit shank widens into the geometric frame before narrowing beneath the basket, giving the ring a balanced architectural profile. With an approximate setting height of 6.10 mm, the open gallery allows light beneath the diamond while keeping the design comfortable for everyday wear.\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\u003eMarquise brilliant center shown at approximately 1.00 ct\u003c\/li\u003e\n\u003cli\u003eCustomizable center diamond from 1 ct to 4.5 ct\u003c\/li\u003e\n\u003cli\u003eSix-prong cathedral basket\u003c\/li\u003e\n\u003cli\u003eGeometric kite-shaped split shank\u003c\/li\u003e\n\u003cli\u003eOpen gallery beneath the center diamond\u003c\/li\u003e\n\u003cli\u003eComfort-fit band approximately 1.90 mm wide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe open kite frame creates strong geometric symmetry while leaving the marquise completely visible from every direction. Instead of using accent diamonds, the polished metal lines become the defining feature of the design.\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\u003eMarquise Brilliant · 10.20 × 5.37 × 3.28 mm · approx. 1.00 ct (shown)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccent stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\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. 1.00 ct · 1 Diamond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSix-Prong Open Cathedral Basket with Geometric Split Shank\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 marquise brilliant combines pointed ends with brilliant-cut facets to create lively sparkle and impressive finger coverage. Every center diamond is F color, VS1 clarity and IGI certified, selected to complement the proportions of this geometric 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 open cathedral basket using warm water, mild soap and a soft brush to remove everyday buildup. Inspect the six prongs regularly to ensure both pointed ends remain securely protected.\u003c\/p\u003e\n\n\u003ch5\u003eFAQ\u003c\/h5\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes the kite-shaped frame different from a traditional split shank?\u003c\/strong\u003e\u003cbr\u003e\nThe split shoulders meet above and below the center stone to create a complete geometric outline. This gives the ring a bold architectural appearance while keeping the center fully visible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy does this marquise use six prongs?\u003c\/strong\u003e\u003cbr\u003e\nThe additional prongs secure both pointed tips and support the curved sides of the diamond. This provides extra protection while maintaining an open view of the stone.\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 contoured bands can follow the raised profile more precisely.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich metal color best complements this design?\u003c\/strong\u003e\u003cbr\u003e\nWhite gold and platinum emphasize the crisp geometric lines, while yellow and rose gold create warm contrast around the elongated marquise center.\u003c\/p\u003e","brand":"Signora Jewels","offers":[{"title":"Silver \/ 1 ct","offer_id":58566161465504,"sku":"SJ\/DR\/LGRG0498","price":362.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 1.5 ct","offer_id":58566168969376,"sku":"SJ\/DR\/LGRG0498","price":542.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2 ct","offer_id":58566169002144,"sku":"SJ\/DR\/LGRG0498","price":747.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2.5 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