Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends tracing a delicate arc that seems to stretch the fingers with quiet elegance. This five-stone semi-set engagement ring in warm 14K yellow gold frames a 12 x 6 mm marquise center, inviting a personal choice of lab-grown diamond to complete the design.

Crafted with a low-profile setting, the band balances presence with everyday ease, its smooth finish and gentle curve ensuring comfort beneath gloves or alongside stackable rings. Each prong is meticulously shaped and polished in our Williamsburg studio, where the subtle gleam of yellow gold complements the marquise’s signature tapered drama.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, offering clarity and brilliance with a reduced environmental footprint.

Ideal for those who appreciate refined geometry and a ring that feels as natural as it looks striking, this design suits slender to medium finger shapes, enhancing length and grace. The semi-set format allows you to select a center stone that resonates with your vision and story.

Should resizing be needed, our Brooklyn artisans provide careful adjustments to maintain the ring’s integrity and comfort.

Explore this romantic foundation in person at our Williamsburg studio or begin your custom design journey online—where craftsmanship meets your unique expression.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a local, personalized design experience.

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.