Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with a quiet drama. This semi-set engagement ring foundation in 10K yellow gold awaits your choice of a 9 x 4.5 mm center stone, designed to showcase the marquise’s signature brilliance and graceful elongation.

Handcrafted in our Williamsburg studio, the band features delicate accent settings that frame the center with subtle shimmer, all finished with a smooth comfort fit that sits low for everyday wear. The warm glow of yellow gold complements the marquise’s vintage-inspired shape, while the artisan polish ensures each curve feels seamless against the skin.

Our commitment to ethical jewelry is reflected in the option for a lab-grown diamond, offering clarity and sparkle with a lighter environmental footprint.

This ring suits those who appreciate refined geometry and a slender profile, ideal for stacking or wearing solo with ease. Its low-profile setting slips comfortably beneath gloves and layers effortlessly with wedding bands.

Should you need resizing, our Brooklyn studio provides precise adjustments to ensure a perfect fit without compromising the ring’s integrity.

Explore this semi-set marquise engagement ring in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s artisanal spirit.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.