Lab-Grown Diamond Engagement Ring

Imagine the gentle curve of a slender finger crowned by a marquise diamond, its elongated shape casting a subtle, graceful shadow. This three-stone semi-set ring in 18K white gold frames a 9 x 4.5 mm marquise center, poised to catch light with every movement, revealing a delicate interplay of brilliance and depth.

Crafted with precision in our Williamsburg studio, the setting balances elegance and everyday wearability—its low-profile design rests comfortably against the skin, while the polished white gold band offers a cool, smooth touch. Each prong is meticulously finished to secure the stone while allowing maximum light to enhance the diamond’s signature tapered drama.

Our commitment to ethical jewelry shines through the use of a lab-grown diamond, offering clarity and sparkle with a smaller environmental footprint. This ring suits those who appreciate refined romance and a design that complements slender or average finger shapes, ideal for stacking or wearing solo with quiet confidence.

Should you need adjustments, resizing is handled expertly in-house to ensure a seamless fit. Lead times reflect our dedication to handcrafted quality, with each piece made to order.

Visit our Williamsburg studio to explore this semi-set marquise engagement ring in person or begin your custom design journey online—crafted for life’s intimate moments.

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