Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with quiet drama. This three-stone semi-set ring features a 7 x 3.5 mm marquise center, ready to cradle your chosen lab-grown diamond within a warm 10K yellow gold band.

Handcrafted in our Williamsburg studio, the band’s smooth finish and gently rounded edges ensure a comfort fit designed for everyday wear. The three-stone setting balances presence with subtlety, allowing light to dance freely around each gem, while the low-profile mounting keeps the ring glove-friendly and stackable alongside other favorites.

Each lab-grown diamond offers the clarity and brilliance of mined stones, created with a fraction of the environmental impact. This ethical choice aligns with our commitment to sustainable fine jewelry crafted locally in Brooklyn.

Ideal for those who appreciate artisan detail and a ring that complements an active lifestyle, this semi-set invites you to select a marquise diamond that reflects your personal story. Resizing is available to ensure a perfect fit, and our team is happy to guide you through care and customization options.

Visit our Williamsburg studio to explore this design in person or begin your custom journey online—where expert craftsmanship meets thoughtful, ethical design.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings. Our expertise in ethical craftsmanship and custom design reflects the vibrant spirit of New York City’s artisan community.

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.