Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic silhouette across the hand. This semi-set three-stone ring invites you to select a 12 x 6 mm marquise center, framed by two delicate side stones that enhance its tapered elegance.

Crafted from 14K white gold, the mounting features a refined low-profile setting that balances presence with everyday comfort. Each prong is hand-finished in our Williamsburg studio, ensuring secure hold and subtle light play without excess height. The band’s gentle curve and smooth interior offer a comfort fit designed for daily wear.

Our diamonds are lab-grown, reflecting a commitment to ethical sourcing and environmental mindfulness without compromising brilliance or clarity.

This design suits those who appreciate architectural grace with a hint of vintage allure, especially flattering on slender fingers or when stacked with complementary bands. Its low profile makes it glove-friendly and unobtrusive for active lifestyles.

Should you need resizing, our Brooklyn workshop handles adjustments with care, typically within a few weeks to maintain the ring’s integrity.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—where craftsmanship meets conscious choice.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and local artistry.

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.