Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow that dances across the hand. This solitaire semi-set invites you to select a center stone that measures 12 by 6 millimeters, offering a striking balance of presence and elegance.

Crafted from 10K white gold, the mounting features a delicate yet secure prong setting designed in our Williamsburg studio. The artisan finish reveals subtle hand-polished facets on the band, ensuring a smooth, comfortable fit that sits low enough for everyday wear without sacrificing visual impact.

Each lab-grown diamond chosen for this ring carries a clarity and brilliance that honors sustainable practices, reflecting a commitment to ethical jewelry without compromise.

The marquise shape, with its tapered points and elongated form, naturally elongates the finger, making it a compelling choice for those who appreciate refined geometry and a touch of vintage allure. Its low-profile setting pairs well with stacking bands or a wedding ring, and the comfort fit band ensures it moves with you, not against you.

Should you need resizing, our Brooklyn studio offers expert adjustments to ensure your ring fits perfectly over time.

Explore this semi-set in person at our Williamsburg workshop or begin your custom design journey online—where craftsmanship meets intention in every detail.

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 spirit.

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.