{"product_id":"luna-marquise-lab-grown-diamond-solitaire-engagement-ring","title":"Luna 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 Cut Lab Grown Diamond · 10.50 × 5.30 mm · Approx. 1.00 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. 1.00 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\u003eSix-Prong Cathedral Basket with Knife Edge 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\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 1.00 ct marquise cut lab grown diamond secured in a refined six-prong cathedral basket. A slim knife edge shank and open gallery keep the attention on the elongated center stone while creating an elegant everyday 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 six-prong basket protects each pointed tip while supporting the marquise diamond with balanced symmetry. The elevated cathedral profile allows light to enter beneath the stone, enhancing brilliance and emphasizing the graceful proportions of the elongated cut.\u003c\/p\u003e\n\n\u003cp\u003eA polished knife edge shank narrows toward the center to create a refined transition into the basket. Free from additional accent stones, every line of the design is focused on highlighting the marquise diamond with timeless simplicity. Every ring is individually handcrafted by Signora Jewels.\u003c\/p\u003e\n\n\u003ch5\u003eDesign Highlights\u003c\/h5\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eCustomizable marquise lab grown diamond from 1 ct to 4.5 ct\u003c\/li\u003e\n\n\u003cli\u003eSix-prong cathedral basket\u003c\/li\u003e\n\n\u003cli\u003eKnife edge comfort shank\u003c\/li\u003e\n\n\u003cli\u003eOpen gallery construction\u003c\/li\u003e\n\n\u003cli\u003eMinimalist solitaire profile\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 using 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 Cut Lab Grown Diamond · 10.50 × 5.30 mm · Approx. 1.00 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. 1.00 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 cut offers exceptional finger coverage with elegant pointed ends and brilliant faceting. Combined with the cathedral basket and knife edge band, this solitaire delivers a clean, refined appearance that remains timeless.\u003c\/p\u003e\n\n\u003ch5\u003eMetal, Care \u0026amp; Fit\u003c\/h5\u003e\n\n\u003cp\u003eClean beneath the cathedral basket using warm water, mild soap and a soft brush to maintain brilliance. The polished knife edge profile is comfortable for everyday wear and pairs beautifully with a wide variety of wedding bands.\u003c\/p\u003e\n\n\u003ch5\u003eFAQ\u003c\/h5\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy does this ring use six prongs?\u003c\/strong\u003e\u003cbr\u003e\nSix prongs provide added protection for the pointed ends of the marquise diamond while maintaining excellent light performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I customize the center diamond size?\u003c\/strong\u003e\u003cbr\u003e\nYes. This design is available with center diamond sizes from 1 ct to 4.5 ct.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is a knife edge shank?\u003c\/strong\u003e\u003cbr\u003e\nA knife edge shank features a raised center ridge that gives the ring a refined profile while keeping the band visually slim.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill a wedding band sit beside this ring?\u003c\/strong\u003e\u003cbr\u003e\nThe cathedral profile pairs well with many straight or gently contoured wedding bands, depending on your preferred fit.\u003c\/p\u003e","brand":"Signora Jewels","offers":[{"title":"Silver \/ 1 ct","offer_id":58578216026272,"sku":"SJ\/DR\/LGRG0840","price":360.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 1.5 ct","offer_id":58578225627296,"sku":"SJ\/DR\/LGRG0840","price":540.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2 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