Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends tracing a delicate arc that seems to cradle the finger. This semi-set engagement ring invites you to choose a center stone that will stretch light across your hand with a graceful, almost lyrical presence.

Crafted in warm 18K rose gold, the slender band is polished to a soft glow that complements the diamond’s fiery sparkle. The solitaire setting is designed with a low profile to sit comfortably beneath gloves or alongside other bands, making it an effortless choice for daily wear. Each piece is meticulously finished by hand in our Williamsburg studio, ensuring a smooth comfort fit and secure prongs that hold your stone with quiet confidence.

Our commitment to ethical jewelry shines through the exclusive use of lab-grown diamonds, offering clarity and brilliance without compromise to the earth.

This ring suits those who appreciate refined elegance with a modern twist—its narrow shape elongates the finger, while the rose gold’s subtle blush adds warmth to every gesture. Ideal for stacking or wearing solo, it adapts seamlessly to your lifestyle.

Should you need resizing or guidance on selecting the perfect marquise center, our Brooklyn studio team is ready to assist with care and expertise.

Explore this semi-set marquise solitaire in person or begin your custom design journey online—each ring is a quiet celebration of craftsmanship and intention.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces made for life’s most meaningful moments.

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.