Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone ring foundation in warm 18K rose gold invites your choice of a 12 x 6 mm center stone, poised to amplify the ring’s sculptural elegance.

Handcrafted in our Williamsburg studio, the band’s gentle curve and secure prong setting balance artistry with everyday wearability. The rose gold’s soft blush complements the marquise’s dramatic shape, while the three-stone layout offers a harmonious interplay of light and shadow. Finished with a comfort fit interior, this mounting sits low enough for ease beneath gloves or alongside stackable bands.

Each diamond is lab-grown, reflecting a commitment to ethical sourcing and environmental mindfulness without compromising brilliance or clarity.

Ideal for those who appreciate architectural form with a romantic edge, this ring suits slender to medium finger profiles and pairs beautifully with delicate wedding bands or bold accents. The semi-set design allows you to select a center stone that resonates personally, whether a sparkling white or a subtle champagne hue.

Resizing is available to ensure a precise fit, and our Brooklyn studio welcomes you to explore custom options in person or through our online design experience.

Discover the thoughtful craftsmanship and ethical artistry that define Haejin Jewelry, a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings and custom design. Our work reflects the spirit of Williamsburg—authentic, refined, and made for daily life.

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.