Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated marquise shape, casting a slender, luminous silhouette that gently elongates the finger. This semi-set halo engagement ring foundation is crafted in warm 18K rose gold, designed to embrace a 9 x 4.5 mm marquise diamond with a secure, low-profile setting that keeps daily wear effortless.

The band’s subtle curve and polished finish ensure comfort fit, while the halo setting adds a delicate frame without bulk, making it ideal for stacking or pairing with a wedding band. Each piece is meticulously finished in our Williamsburg studio, where precision meets understated elegance.

Our commitment to lab-grown diamonds means this ring supports ethical sourcing and sustainability without compromising brilliance or clarity.

Its slender proportions suit hands seeking a refined statement that balances presence with practicality, especially for those who prefer a ring that slips easily under gloves or fits seamlessly into an active lifestyle.

Should you need resizing or customization, our Brooklyn studio offers attentive adjustments to ensure your ring feels as natural as it looks.

Explore this semi-set halo ring in person at our Williamsburg studio or begin your custom design journey online—crafted for life’s most meaningful moments.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending expert craftsmanship with ethical clarity and local artistry in New York City.

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.