Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of the marquise diamond, its pointed ends tracing a delicate arc that seems to stretch the hand with quiet elegance. This semi-set solitaire invites your choice of center stone, perfectly sized at 8 by 4 millimeters to balance presence with subtlety.

Crafted in warm 18K rose gold, the mounting’s slender prongs curve gently to cradle the marquise shape, while the polished white gold band offers a cool contrast that enhances the diamond’s fiery sparkle. The low-profile setting ensures daily comfort and ease beneath gloves or alongside stackable bands, making it a versatile companion for everyday wear.

Each ring is meticulously finished in our Williamsburg studio, where expert hands inspect every contour and join to ensure a seamless, refined silhouette. The choice of lab-grown diamonds reflects a commitment to ethical sourcing and sustainability, offering clarity and brilliance without compromise.

Designed for those who appreciate romantic geometry and understated drama, this solitaire suits slender to medium finger sizes, its elongated form flattering a variety of hand shapes. The semi-set design allows you to select a stone that resonates personally, making the ring uniquely yours.

Should you need resizing or guidance on selecting the ideal marquise cut, our Brooklyn studio offers a pressure-free consultation to tailor your vision with care.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—where craftsmanship meets conscious luxury in the heart of Williamsburg.

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.

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.