Lab-Grown Diamond Engagement Ring

Light catches the elongated marquise shape, casting a slender, graceful silhouette that seems to stretch beyond the finger. This semi-set solitaire invites your choice of a 9 x 4.5 mm marquise diamond, whose pointed ends and curved sides create a quiet drama, both elegant and distinctive.

Crafted in warm 14K rose gold, the mounting’s smooth, low-profile band curves gently for comfort, while the prongs are designed to cradle the stone securely without overshadowing its refined geometry. Each piece is hand-finished in our Williamsburg studio, ensuring a seamless polish and precise fit that wears effortlessly every day.

Our commitment to ethical jewelry is reflected in the lab-grown diamond option, offering clarity and brilliance with a smaller environmental footprint. This ring’s slender silhouette suits those who appreciate subtle sophistication and a design that elongates the hand, pairing beautifully with stackable bands or worn solo.

Should you need resizing or prefer a different diamond cut, our Brooklyn studio welcomes custom consultations to tailor your vision. The semi-set design allows you to select a center stone that resonates personally, making the ring uniquely yours.

Explore this romantic foundation in person or begin your custom design journey online—each step guided by quiet expertise and Brooklyn craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with a modern sensibility rooted in New York City’s creative heart.

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.