Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated silhouette of a marquise diamond, it casts a striking, tapered sparkle that draws the eye along the finger’s natural line. This semi-set engagement ring foundation in 14K white gold offers a refined stage for a 9 x 4.5 mm marquise center, ready to be paired with a stone that balances bold geometry and delicate elegance.

Handcrafted in our Williamsburg studio, the band’s smooth, low-profile shank is polished to a satiny finish, designed for everyday wear without catching or discomfort. The prong setting is engineered to cradle the pointed ends securely while allowing maximum light to flood the diamond’s facets, enhancing its signature brilliance.

Each piece reflects our commitment to ethical jewelry: the marquise diamond you select will be lab-grown, ensuring clarity and sustainability without compromise.

The slender band suits a variety of hand shapes, especially elongating shorter fingers, and its minimalist silhouette pairs effortlessly with wedding bands or stackable rings. Its comfort fit and modest height make it glove-friendly and ideal for a life in motion.

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

Explore this semi-set marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online—crafted for those who appreciate thoughtful detail and modern romance.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a genuine local 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.