Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated points of a marquise diamond, it casts a striking silhouette that feels both bold and refined. This semi-set halo engagement ring foundation in 18K yellow gold offers a secure, low-profile setting designed to showcase a 12 x 6 mm marquise center stone with subtle brilliance.

Crafted in Williamsburg, the band’s smooth finish and modest height ensure comfort for daily wear, while the halo setting promises a delicate frame that enhances the diamond’s dramatic shape without overwhelming it. Each piece undergoes meticulous hand inspection to meet exacting standards of balance and polish.

Choosing a lab-grown diamond here reflects a commitment to ethical jewelry—minimizing environmental impact while delivering exceptional clarity and sparkle.

The slender band suits slender to medium finger sizes and pairs effortlessly with wedding bands or stackable rings, thanks to its streamlined profile and gentle curvature. Its design accommodates glove wear and active lifestyles without catching or discomfort.

Resizing is available to ensure a precise fit, with typical lead times aligned to our Brooklyn studio’s handcrafted pace.

Explore this semi-set halo ring in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits to bring your vision to life.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces made for everyday elegance.

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.