Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous shadow that dances across the skin. This semi-set engagement ring invites you to choose a center stone that echoes that graceful, tapered drama—6 by 3.5 millimeters of light and life waiting to be embraced.

Crafted in warm 14K yellow gold, the slender band curves gently to cradle the marquise with a delicate yet secure four-prong setting. The low-profile design ensures the ring sits comfortably for daily wear, while the polished finish reflects subtle glimmers with every movement. Each piece is meticulously hand-finished in our Williamsburg studio, where precision meets quiet artistry.

Our diamonds are lab-grown, offering a clarity and brilliance that honors both beauty and sustainability without compromise.

The slender band and elongated shape flatter a variety of hand sizes, especially those who appreciate a ring that feels light and unobtrusive. Its solitaire style pairs effortlessly with wedding bands or stackable rings, making it a versatile choice for a modern life.

Should you need a different size, resizing is available to ensure a perfect fit without disrupting the ring’s elegant proportions.

Explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online—where your vision shapes every detail.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with expert care, ethical clarity, 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.