Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic shadow across the hand. This semi-set engagement ring invites you to select a center stone that echoes that distinctive, tapered brilliance.

Crafted from 14K white gold, the mounting features a delicate yet secure solitaire setting designed in our Williamsburg studio. The slender prongs rise with precision, allowing light to flood the diamond’s 12 x 6 mm surface, while the band’s smooth finish ensures a comfortable, low-profile fit ideal for everyday wear.

Each piece reflects our commitment to ethical jewelry: lab-grown diamonds offer clarity and sparkle with a significantly reduced environmental footprint.

The elongated marquise shape naturally elongates the finger, pairing beautifully with slender hands or stacked bands. Its semi-set nature means you can personalize the ring with a stone that suits your vision and lifestyle.

Should you need resizing or guidance on selecting the perfect diamond, our Brooklyn studio offers expert advice and a pressure-free experience.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—crafted with care in Williamsburg, where fine jewelry meets thoughtful intention.

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

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.