Lab-Grown Diamond Engagement Ring

Light catches the elongated points of a marquise diamond, casting a slender, graceful shadow that seems to stretch beyond the hand. This semi-set three-stone engagement ring invites your choice of a 6 x 3.5 mm marquise center, its distinctive shape lending a refined drama and subtle elongation to the finger.

Crafted in cool, enduring platinum, the mounting balances strength with a delicate silhouette. The three-stone setting is designed with a low profile and smooth edges, ensuring comfort for daily wear while allowing light to dance freely around each gem. Each piece is meticulously finished and inspected in our Williamsburg studio, where precision meets quiet artistry.

Our diamonds are lab-grown, offering clarity and brilliance with a mindful approach to sustainability and ethical sourcing.

The slender marquise shape suits hands seeking a blend of vintage allure and modern geometry, while the three-stone design symbolizes a narrative of past, present, and future. Its low-profile setting pairs well with stacking bands or alone as a statement of quiet elegance.

Should you need resizing or wish to explore custom details, our Brooklyn studio offers a pressure-free experience tailored to your vision and lifestyle.

Visit us in Williamsburg or begin your custom design journey online—where thoughtful craftsmanship and ethical luxury meet.

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 creative spirit of New York City’s Williamsburg neighborhood.

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.