Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with quiet drama. This semi-set halo ring foundation in warm 14K yellow gold frames an 8 x 4 mm marquise center stone, ready to be paired with a lab-grown diamond of your choosing.

Handcrafted in our Williamsburg studio, the band’s smooth finish and delicate halo setting balance artisanal detail with everyday wearability. The low-profile design keeps the ring comfortable beneath gloves or layered with other bands, while the secure prong setting ensures the stone sits confidently without excess height.

Each piece reflects a commitment to ethical jewelry: lab-grown diamonds offer clarity and brilliance with a smaller environmental footprint. This ring’s classic marquise shape lends an elegant elongation to the hand, ideal for those who appreciate refined geometry with a hint of vintage allure.

Designed for adaptability, the semi-set allows you to select a center stone that fits your vision and lifestyle. Resizing is straightforward, and our studio team guides you through care and customization with ease.

Explore this foundation in person at our Williamsburg workshop or begin your custom design journey online—crafted for the rhythms of daily life and the moments that matter.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s artisan community.

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.