Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your finger as a 6 x 3.5 mm marquise diamond catches the light with its tapered brilliance. This semi-set solitaire ring in 10K yellow gold offers a sleek, low-profile design that sits close to the hand, ideal for everyday wear without catching or discomfort.

Crafted in Williamsburg, Brooklyn, the band is carefully shaped for a comfort fit, polished to a soft glow that complements the diamond’s sharp silhouette. The mounting’s secure prongs cradle the stone while maintaining a streamlined profile, balancing technical precision with understated elegance.

Each diamond is lab-grown, reflecting a commitment to ethical sourcing and sustainability without compromising on clarity or fire. The warm yellow gold enhances the marquise’s vintage-inspired shape, making it a versatile choice for stacking or wearing solo.

Designed for those who appreciate refined craftsmanship and practical luxury, this ring suits slender to medium finger sizes, offering a comfortable feel beneath gloves or daily activities. The semi-set option allows you to select a center stone that resonates personally, ensuring a truly custom expression.

Resizing is available to ensure the perfect fit, and our Brooklyn studio welcomes you to explore this design in person or begin your custom journey online with ease.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and local authenticity in every piece.

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.