Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its pointed ends tracing a delicate arc that seems to stretch the fingers with quiet elegance. This semi-set solitaire invites you to choose a 5 x 3 mm lab-grown marquise, a shape known for its graceful drama and vintage allure.

Crafted in warm 18K yellow gold, the mounting balances subtlety with presence, designed for everyday wear with a low-profile setting that rests close to the finger. The polished band curves gently, offering a comfort fit that feels as natural as a second skin, while the secure prongs cradle the stone without overshadowing its brilliance.

Each ring is finished by hand in our Williamsburg studio, where precision meets care in every detail—from the smooth edges to the final inspection under magnification. The ethical clarity of the lab-grown diamond reflects a commitment to sustainability without compromise.

Ideal for those who appreciate a refined silhouette that complements slender or average finger shapes, this solitaire’s streamlined form layers effortlessly with wedding bands or stackable rings. Its modest scale and profile make it glove-friendly and unobtrusive for daily life.

Should you wish to adjust sizing or explore custom options, our Brooklyn studio offers personalized consultations with thoughtful timelines tailored to your needs.

Visit us in Williamsburg or begin your custom design journey online to bring this marquise solitaire to life with Haejin Jewelry’s signature blend of expert craftsmanship and ethical artistry, rooted in the heart of Brooklyn.

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.