Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of an 8 x 4 mm marquise diamond, casting a slender, luminous shadow across the hand. This semi-set solitaire ring invites you to select a center stone that balances architectural drama with delicate refinement.

Crafted from warm 18K rose gold, the band is shaped and polished in our Williamsburg studio to a gentle comfort fit, its subtle curve designed for everyday wear. The low-profile setting secures the stone with slender prongs that cradle the marquise’s pointed ends, emphasizing its tapered elegance while ensuring durability.

Each piece reflects a commitment to ethical jewelry: the marquise diamond you choose will be lab-grown, offering clarity and brilliance with a smaller environmental footprint. This ring suits those who appreciate a refined statement—its slender band complements stacking and fits comfortably beneath gloves or sleeves.

Should you need resizing or prefer a custom stone cut, our Brooklyn artisans accommodate adjustments with care and precision, ensuring your ring fits seamlessly into your life.

Explore this semi-set marquise solitaire in our Williamsburg studio or begin your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry is a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship and local expertise shape every custom design.

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.