Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow across the hand. This semi-set platinum solitaire invites you to select a 10 x 5 mm marquise center stone, its tapered points echoing the refined geometry of a handcrafted artisan piece.

Crafted in Williamsburg’s studio, the mounting features a low-profile setting that hugs the finger comfortably, designed for daily wear without catching. The platinum band is polished to a satin finish, its subtle weight balancing the stone’s poised elegance. Each prong is meticulously shaped to secure the marquise’s delicate points, a testament to precision and care.

Our commitment to lab-grown diamonds ensures clarity and brilliance with a lighter environmental footprint, reflecting a modern approach to ethical jewelry.

This ring suits those who appreciate architectural lines and a sleek silhouette, especially flattering on slender fingers or when paired with stackable bands. Its comfort fit and streamlined profile make it glove-friendly and ideal for an active lifestyle.

Should you wish to resize, our Brooklyn studio offers expert adjustments to maintain the ring’s integrity and comfort.

Explore this semi-set marquise solitaire in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio devoted to crafting lab-grown diamond engagement rings with ethical precision and artisan expertise, rooted in New York City’s vibrant creative 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.