Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, graceful silhouette across the hand. This semi-set engagement ring invites you to select a 9 x 4.5 mm marquise stone, whose tapered shape visually lengthens fingers with refined drama.

Crafted in warm 14K rose gold, the mounting features a low-profile solitaire setting designed for everyday wear. Its secure prongs cradle the stone close to the finger, while the smooth band offers a comfortable fit that slips easily beneath gloves or alongside stackable rings. Each piece is meticulously finished by hand in our Williamsburg studio, ensuring precise alignment and a polished surface that catches light without catching on fabric.

Our commitment to lab-grown diamonds means your ring carries a clarity and brilliance born from sustainable practices, reducing environmental impact without compromising beauty.

The slender silhouette suits those who appreciate subtle elegance with a modern edge, especially on slender to medium-width fingers. Its minimalist design pairs effortlessly with wedding bands or other fine jewelry.

Should you need resizing or prefer a custom stone cut, our Brooklyn studio offers personalized consultations to tailor your ring perfectly.

Explore this marquise solitaire semi-set in person at our Williamsburg workshop or begin your custom design journey online—crafted for a lifetime of daily moments.

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