Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated facets of an emerald-cut diamond, casting a serene, glassy glow that feels both architectural and intimate. This semi-set three-stone engagement ring in platinum offers a refined foundation for a 12 x 10 mm emerald center, framed by two delicate side stones that enhance its linear elegance without overpowering the hand.

Each platinum band is meticulously shaped and polished in our Williamsburg studio, ensuring a smooth, comfort-fit profile that sits low against the finger for everyday wear. The setting’s clean lines and secure prongs highlight the emerald’s clarity and step-cut geometry, inviting light to dance subtly across its surface.

Crafted with lab-grown diamonds, this ring reflects a commitment to ethical jewelry—minimizing environmental impact while maintaining exceptional clarity and brilliance.

Its sculptural form suits those who appreciate modern artistry balanced with classic restraint, especially hands that favor elongated shapes or a stackable silhouette. The low-profile setting slips easily beneath gloves and layers gracefully with other bands.

Should you need resizing, our in-house artisans provide precise adjustments to ensure a seamless fit without compromising the ring’s integrity.

Explore this semi-set emerald engagement ring in person at our Williamsburg studio or begin your custom design journey online—where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert design, ethical sourcing, and artisan skill to create pieces made for daily life and lasting meaning.

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.