Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it traces a delicate arc reminiscent of a whispered promise. This semi-set engagement ring invites you to choose your own 6 x 3 mm marquise center, a shape that elegantly elongates the finger with its tapered points and subtle brilliance.

Crafted from 18K white gold, the mounting features a refined solitaire setting designed for everyday wear. The slender prongs cradle the stone securely while maintaining a low profile that slips comfortably beneath gloves and stacks effortlessly with other bands. Each piece is hand-finished in our Williamsburg studio, polished to a soft sheen that complements the diamond’s glassy facets.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, offering clarity and sustainability without compromise. This ring suits those who appreciate modern romance with a quiet confidence, especially hands that favor elongated shapes or seek a statement that remains graceful and wearable.

Should you need resizing or prefer a custom adjustment, our Brooklyn studio offers attentive care and expert craftsmanship to ensure a perfect fit. Lead times vary depending on stone selection, with personalized consultations available to guide your choice.

Explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online—where thoughtful design meets ethical artistry.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to crafting lab-grown diamond engagement rings with expert precision and ethical integrity, rooted in the vibrant heart of New York City.

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.