Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger with subtle drama. This semi-set engagement ring offers a 6 x 3.5 mm marquise center, designed to showcase your chosen stone with delicate accent details that enhance its refined profile.

Crafted in 10K yellow gold, the mounting balances durability with a warm glow, finished to a smooth comfort fit that sits low against the hand for everyday ease. The setting’s streamlined design minimizes height, making it glove-friendly and ideal for those who prefer a ring that moves seamlessly with daily life.

Each piece is carefully inspected in our Williamsburg studio, where precision meets thoughtful engineering to ensure the accents frame the marquise without overpowering its distinctive shape. The semi-set format invites you to select a lab-grown diamond that reflects your personal vision, combining ethical clarity with Brooklyn craftsmanship.

Lab-grown diamonds offer a sustainable alternative with the same optical brilliance as mined stones, aligning with a modern approach to responsible luxury. This ring suits those who appreciate architectural elegance and a refined silhouette that complements slender or average finger sizes.

Should you need resizing or wish to discuss stone options, our Brooklyn studio provides personalized consultations with no pressure and clear timelines. Explore the possibilities in person or begin your custom design journey online.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending local artistry with sustainable values in every custom design.

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.