Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, graceful shadow that echoes the quiet confidence of its wearer. This semi-set engagement ring in 10K yellow gold frames a 9 x 4.5 mm marquise center with delicate accent stones, emphasizing clarity and architectural poise.

Handcrafted in Williamsburg, the band’s smooth finish and low-profile setting ensure comfort for daily wear, while the precise prong work secures the stone with subtle strength. The warm glow of yellow gold contrasts gently with the diamond’s crisp facets, creating a modern-minimal silhouette that balances structure with refined simplicity.

Each lab-grown diamond is cultivated with care, offering an ethical alternative that reduces environmental impact without compromising brilliance or clarity. The elongated marquise shape visually lengthens the finger, ideal for those seeking a ring that feels both elegant and distinctive.

Designed for ease, this semi-set allows you to select a center stone that suits your personal taste, with resizing available to ensure a perfect fit. Its slender profile pairs effortlessly with stacking bands or stands alone as a statement of quiet sophistication.

Visit our Williamsburg studio to explore this design in person or begin your custom journey online—where thoughtful craftsmanship meets Brooklyn’s creative spirit.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local artistry to create pieces made for everyday life and lasting meaning.

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.