Lab-Grown Diamond Engagement Ring

Light catches the elongated curves of a marquise diamond, casting a slender, graceful shadow that seems to stretch beyond the finger. This semi-set solitaire invites you to choose a 5 x 3 mm marquise stone, whose pointed ends and brilliant facets evoke a quiet drama and refined elegance.

Crafted in warm 18K yellow gold, the mounting’s delicate prongs cradle the stone with precision, allowing light to flood the diamond’s surface. The band’s subtle taper and polished finish ensure a comfortable fit that sits low enough for everyday wear without sacrificing presence.

Each piece is thoughtfully made in our Williamsburg studio, where sustainable practices guide the creation of lab-grown diamonds—offering clarity and brilliance with a lighter environmental footprint.

This solitaire suits those who appreciate a ring that elongates the hand and pairs effortlessly with stacking bands or a wedding band. Its low-profile setting slips easily beneath gloves and daily wear, balancing bold geometry with subtlety.

Should you need resizing or prefer a custom stone selection, our Brooklyn studio welcomes your questions with care and expertise.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—crafted for life’s intimate moments, right here in Williamsburg.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending local artistry with sustainable luxury.

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.