{"product_id":"coffin-cut-lab-grown-diamond-vintage-engagement-ring","title":"Coffin Cut Lab Grown Diamond Vintage Engagement Ring","description":"\u003ctable\u003e\n\u003ctbody\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\u003eCoffin Cut · 11.20 × 6.80 mm · Approx. 2.00 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\u003eCluster Diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Round Brilliant + 6 Marquise · Approx. 0.26 ct\u003c\/td\u003e\n\u003ctd\u003eScaled to suit the selected center size\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. 2.26 ct\u003c\/td\u003e\n\u003ctd\u003eVaries with selected 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\u003eFour-Prong Cathedral Basket with Half Halo \u0026amp; Marquise Cluster\u003c\/td\u003e\n\u003ctd\u003e—\u003cimg\u003e\n\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\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eAt a glance\u003c\/h5\u003e\n\u003cp\u003eA coffin cut lab grown diamond vintage engagement ring from Signora Jewels.\u003c\/p\u003e\n\u003cp\u003eThe ring shown features an 11.20 × 6.80 mm coffin cut lab grown diamond weighing approximately 2.00 ct. Twenty round brilliant diamonds and six marquise diamonds create a decorative half halo totaling approximately 0.26 ct. IGI certified.\u003c\/p\u003e\n\u003cp\u003eMade to order in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.\u003c\/p\u003e\n\u003cp\u003eFree insured express shipping over $500, duties prepaid to the US, UK and Canada, with a 30-day return policy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelect your preferred center diamond size and precious metal using the options on this page.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe coffin cut center is held in a four-prong cathedral basket that leaves the dramatic silhouette fully visible while allowing light to enter through the open gallery beneath. The elongated shape and angular outline give the ring a bold vintage character unlike traditional diamond cuts.\u003c\/p\u003e\n\u003cp\u003eA decorative half halo rises above the center with marquise and round brilliant diamonds arranged in a crown-like cluster. The marquise accents introduce graceful points while the round diamonds soften the outline, creating a balanced contrast that frames the center without covering it. Signora Jewels crafts every ring to order in your selected precious metal and center diamond size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Highlights\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCustomizable coffin cut lab grown diamond from 1 ct to 4.5 ct\u003c\/li\u003e\n\u003cli\u003eFour-prong cathedral basket\u003c\/li\u003e\n\u003cli\u003eVintage-inspired half halo design\u003c\/li\u003e\n\u003cli\u003eSix marquise accent diamonds\u003c\/li\u003e\n\u003cli\u003eTwenty round brilliant accent diamonds\u003c\/li\u003e\n\u003cli\u003eHigh polish finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse more \u003ca href=\"\/collections\/vintage-engagement-rings\"\u003eVintage Engagement Rings\u003c\/a\u003e, explore our \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\u003ch5\u003eDiamond \u0026amp; Ring Details\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\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 Diamond\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoffin Cut · 11.20 × 6.80 mm · Approx. 2.00 ct (shown)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRound Accent Diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Stones · Approx. 0.11 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMarquise Accent Diamonds\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 Stones · Approx. 0.15 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e27\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. 2.26 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCenter Diamond 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\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eMeasurements are approximate. Final dimensions vary according to the selected center diamond size.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch5\u003eAbout Lab Grown Diamonds\u003c\/h5\u003e\n\u003cp\u003eThe coffin cut combines elongated geometry with bold angular edges for a distinctive vintage-inspired appearance. The decorative marquise and round diamond cluster creates a crown-like frame that highlights the unique outline while preserving the center as the focal point.\u003c\/p\u003e\n\u003ch5\u003eMetal, Care \u0026amp; Fit\u003c\/h5\u003e\n\u003cp\u003eAvailable in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and around the marquise cluster using warm water, mild soap and a soft brush to maintain brilliance and keep the detailed setting free from residue.\u003c\/p\u003e\n\u003ch5\u003eFAQ\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes a coffin cut different from other diamond shapes?\u003c\/strong\u003e\u003cbr\u003eThe coffin cut features tapered sides and angular ends, creating a bold geometric outline with a distinctive vintage-inspired appearance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I choose a different center diamond size?\u003c\/strong\u003e\u003cbr\u003eYes. This design is available with center diamond options from 1 ct through 4.5 ct while maintaining the same vintage-inspired styling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy are marquise diamonds used in the half halo?\u003c\/strong\u003e\u003cbr\u003eTheir elongated points create a crown-like frame around the center, adding height and contrast without covering the coffin cut outline.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the cathedral basket suitable for everyday wear?\u003c\/strong\u003e\u003cbr\u003eYes. The cathedral shoulders reinforce the basket while the polished comfort shank provides a balanced fit for daily wear.\u003c\/p\u003e","brand":"Signora Jewels","offers":[{"title":"Silver \/ 1 ct","offer_id":58574358118560,"sku":"SJ\/DR\/LGRG1134","price":438.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 1.5 ct","offer_id":58574487617696,"sku":"SJ\/DR\/LGRG1134","price":618.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2 ct","offer_id":58574487650464,"sku":"SJ\/DR\/LGRG1134","price":822.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 2.5 ct","offer_id":58574487683232,"sku":"SJ\/DR\/LGRG1134","price":1052.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 3 ct","offer_id":58574487716000,"sku":"SJ\/DR\/LGRG1134","price":1307.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 3.5 ct","offer_id":58574487748768,"sku":"SJ\/DR\/LGRG1134","price":1587.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ 4 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