Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender beam that seems to stretch beyond the hand. This semi-set solitaire ring invites you to choose your own 8 x 4 mm marquise center stone, a shape known for its graceful taper and subtle drama.

Crafted from cool 14K white gold, the mounting features a delicate yet secure prong setting that holds the stone close to the finger, offering a low-profile silhouette ideal for everyday wear. The band’s smooth finish and balanced weight ensure a comfortable fit, while the minimalist design allows the diamond’s shape to command attention without distraction.

Each piece is carefully finished and inspected in our Williamsburg studio, where precision meets quiet artistry. The lab-grown diamond option reflects a commitment to ethical sourcing and sustainability, reducing environmental impact without compromising brilliance.

This solitaire suits those who appreciate refined elegance with a modern edge—its slender form elongates the finger and pairs effortlessly with stacking bands or a wedding band. The low-profile setting is glove-friendly and designed for daily life, marrying beauty with practicality.

Should you wish to adjust the band size, resizing is available to ensure a perfect fit. Our process is transparent and accommodating, with lead times tailored to your custom design journey.

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

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and local authenticity in every creation.

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.