Explore Marquise Cut Lab Grown Diamond Engagement Rings at The Diamond Oasis. Every diamond engagement ring is handcrafted to order in 18K white, yellow, or rose gold and set with an exceptional IGI-certified lab-grown diamond. Natural diamond engagement rings are also available with GIA-certified natural diamonds upon request.

Known for its elegant, elongated shape and brilliant facets, the Marquise cut diamond is a popular choice for those looking for a distinctive diamond engagement ring that creates an illusion of larger size. Our collection features a wide variety of lab-grown diamond engagement ring styles, including solitaire, pavé, hidden halo, halo, halo pavé, trilogy (three-stone), accent, cathedral, bezel, twisted band, engraved band, cigar band, vintage-inspired, toi et moi, east-west, split shank, and other contemporary designs. Whether you prefer a minimalist setting or intricate detailing, you'll find a Marquise diamond ring to suit your style.

Available in 1 to 10 carats, every lab-grown diamond ring can be customized with your preferred diamond quality, carat weight, metal color, band style, and setting details. If you prefer a natural diamond, the same designs are also available with GIA-certified natural diamonds. Our diamond specialists are available to help you compare lab-grown diamonds and natural diamonds, making it easy to choose the perfect diamond engagement ring for your style and budget.

Every Marquise diamond engagement ring is made to order using premium materials and expertly selected diamonds. We offer complimentary engraving, transparent pricing, and complimentary express delivery to the UAE, Saudi Arabia, Lebanon, and worldwide, making it simple to design or order your lab-grown or natural diamond engagement ring online.