Lab-Grown Diamond Engagement Ring

Light catches the marquise diamond’s elongated silhouette, casting a slender beam that seems to stretch across the hand. This semi-set solitaire invites you to select a center stone that balances sharp elegance with a whisper of vintage romance.

Crafted from warm 18K yellow gold, the mounting’s slender prongs curve gently to cradle a 6 x 3.5 mm marquise diamond, emphasizing its tapered points without overwhelming its delicate profile. The band’s smooth finish and modest width ensure a comfortable fit, designed for everyday wear without catching or shifting.

Each piece is meticulously hand-finished in our Williamsburg studio, where precision meets quiet artistry. The low-profile setting keeps the diamond close to the finger, making it glove-friendly and ideal for stacking alongside other bands.

Our commitment to ethical jewelry is reflected in the choice of lab-grown diamonds, offering clarity and brilliance with a smaller environmental footprint.

This solitaire suits those who appreciate refined geometry and a ring that feels as natural as it looks striking—perfect for hands that favor slender, elongated shapes or for anyone seeking a subtle statement.

Should you wish to adjust the band size or explore stone options, our team is happy to guide you through a seamless custom design process with typical lead times of 4–6 weeks.

Visit our Williamsburg studio to experience this marquise solitaire in person or begin your custom design journey online. At Haejin Jewelry, we blend expert craftsmanship with ethical sensibility to create lab-grown diamond engagement rings that resonate with Brooklyn’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.