Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of the marquise diamond, its pointed ends drawing the eye along the length of the finger with subtle drama. This solitaire semi-set ring offers a refined foundation for an 8 x 4 mm marquise stone, designed with a low-profile setting that keeps the diamond close to the hand for everyday ease.

Crafted from solid 18K yellow gold, the mounting balances durability with a smooth comfort fit, allowing the band to sit naturally without catching. The prongs are engineered to secure the stone firmly while maintaining a sleek, unobtrusive profile that complements stacking or solo wear.

Each piece reflects our commitment to ethical jewelry through the exclusive use of lab-grown diamonds, reducing environmental impact without compromising brilliance or clarity.

Ideal for those who favor a distinctive yet practical engagement ring, this setting suits slender to medium finger sizes and pairs well with both casual and formal styles. Its streamlined design ensures glove-friendly wear and effortless stacking with wedding bands.

Should you need resizing or prefer a custom finish, our Brooklyn studio offers personalized adjustments with attentive care and transparent timelines.

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

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a modern, local sensibility.

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.