Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of the marquise diamond, casting a slender, confident silhouette across the hand. This semi-set three-stone ring foundation in 18K yellow gold awaits your choice of an 8 x 4 mm center stone, ready to frame it with balanced side gems that echo its architectural grace.

Crafted with a low-profile setting, the band’s smooth finish and subtle taper ensure a comfortable fit for daily wear, while the three-stone design offers a modern-minimalist statement of clarity and structure. Each curve and angle is refined in our Williamsburg studio, where expert hands polish and inspect every detail before it leaves the bench.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, combining sustainability with the brilliance you expect. The warm glow of 18K yellow gold complements the marquise’s tapered drama, making this ring ideal for those who appreciate sleek geometry and a refined silhouette.

Designed to sit gracefully alongside other bands or worn solo, its low profile makes it glove-friendly and unobtrusive, perfect for an active lifestyle without sacrificing elegance. Resizing is available to ensure a precise fit, crafted with care in Brooklyn.

Explore this semi-set foundation in our Williamsburg studio or begin your custom design journey online—where your vision meets our craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces made for life’s most meaningful moments.

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.