Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along the finger like a whispered secret. This semi-set three-stone ring invites your choice of a 12 x 6 mm center stone, ready to become the centerpiece of a bespoke design crafted in warm 18K rose gold.

Each band is hand-shaped in our Williamsburg studio, where the soft blush of rose gold is polished to a satin finish that feels smooth against the skin. The three-stone setting balances presence with wearability, designed low enough to slip comfortably beneath gloves or stack alongside other bands without catching.

Our diamonds are lab-grown, offering a clarity and brilliance that honors both the environment and your values with a smaller footprint.

This ring suits those who appreciate architectural elegance paired with artisanal detail—its marquise shape elongates the finger, while the gentle warmth of rose gold complements a variety of skin tones. The semi-set design allows for a personalized center stone selection, ensuring your ring is truly one of a kind.

Should you need resizing or guidance on stone selection, our Brooklyn studio offers expert advice and a pressure-free experience tailored to your timeline.

Visit us in Williamsburg or begin your custom design journey online to bring this distinctive marquise engagement ring to life.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship meets ethical sourcing in every piece we create.

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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.