Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated silhouette of a marquise diamond, it casts a slender, dramatic sparkle that seems to stretch beyond the finger. This semi-set solitaire ring foundation in warm 10K yellow gold invites you to choose a center stone that will emphasize the marquise’s signature tapered points and graceful curve.

Handcrafted in our Williamsburg studio, the band is shaped for comfort with a subtle taper that balances the diamond’s length, while the low-profile setting keeps the silhouette sleek and glove-friendly. Each piece is meticulously finished by hand, ensuring smooth edges and a polished surface that feels as natural as it looks.

Our commitment to lab-grown diamonds means your ring carries a clarity and brilliance born from sustainable practices, reflecting a modern approach to ethical jewelry.

This design suits those who appreciate refined geometry and a ring that layers effortlessly with wedding bands or stackable accents. The semi-set style allows you to select an 8 x 4 mm marquise stone that fits your vision, whether you prefer a classic white diamond or a subtle fancy hue.

Should you need resizing, our Brooklyn studio offers personalized adjustments to ensure a perfect fit without compromising the ring’s integrity.

Explore this foundation in person at our Williamsburg workshop or begin your custom design journey online—crafted for daily wear, made for your story.

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.