Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points tracing a delicate arc that seems to stretch the hand with quiet elegance. This semi-set solitaire invites a fixed two-tone a 10 x 5 mm center stone, ready to become the heart of a bespoke creation.

Crafted in a fixed two-tone combination of warm 18k yellow and 18k yellow and platinum and cool 18k yellow and platinum, the band balances contrast with harmony—18k yellow and platinum prongs secure the stone while the 18k yellow and 18k yellow and platinum shank curves softly beneath, finished to a smooth comfort fit that wears effortlessly every day. The low-profile setting keeps the diamond close to the finger, ideal for stacking or slipping under gloves without catching.

Each ring is meticulously hand-finished in our Williamsburg studio, where precision meets quiet artistry. The lab-grown diamond option ensures a clarity and brilliance born from sustainable innovation, reflecting a commitment to ethical jewelry without compromise.

This design suits those who appreciate a blend of classic romance and modern craftsmanship—its slender silhouette flattering a range of hand shapes and sizes, while the solitaire style allows the diamond’s unique fire to take center stage.

Resizing is straightforward, handled with care to preserve the integrity of the two-tone finish and comfort fit.

Explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining ethical craftsmanship with local expertise to create pieces made for daily life and lasting beauty.

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.