Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along a graceful arc. This semi-set engagement ring foundation in 18K white gold offers a sleek, modern-minimal frame designed to showcase a 12 x 6 mm marquise center stone of your choosing.

Crafted with precision in Williamsburg, Brooklyn, the band’s clean lines and subtle accents emphasize clarity and architectural balance. The low-profile mounting ensures everyday comfort while maintaining a confident presence on the finger. Each piece is hand-finished and carefully inspected to meet exacting standards.

Our commitment to sustainability is reflected in the exclusive use of lab-grown diamonds, combining brilliance with ethical responsibility.

The slender band suits those who appreciate structured elegance and pairs well with stacking rings or a wedding band. Its refined shape complements longer fingers and offers a glove-friendly fit for daily wear.

Should you need resizing or prefer a custom accent arrangement, our Brooklyn studio welcomes consultations to tailor the design to your lifestyle.

Explore this semi-set marquise ring in person at our Williamsburg studio or begin your custom design journey online with Haejin Jewelry, where expert craftsmanship meets ethical luxury in the heart of Brooklyn.

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.