Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone engagement ring foundation in platinum awaits a center stone measuring 12 by 6 millimeters, ready to frame your story with architectural elegance and subtle drama.

Crafted in platinum, the mounting offers a low-profile setting that balances presence with everyday comfort. Each prong is meticulously shaped and polished in our Williamsburg studio, ensuring a secure hold while maintaining a refined silhouette that slips easily beneath gloves or alongside stackable bands.

Our commitment to ethical jewelry shines through the exclusive use of lab-grown diamonds, chosen for their clarity and sustainability without compromise.

Designed for those who appreciate a blend of classic romance and modern craftsmanship, this piece suits hands that favor elongated shapes and a confident yet understated statement. Its three-stone arrangement invites personal meaning, perfect for layering or wearing solo with quiet distinction.

Should you wish to adjust sizing or explore stone 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—where expert guidance meets ethical artistry in every detail.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with sustainable values and the creative spirit of New York City.

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.