Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone engagement ring foundation in 10K yellow gold invites you to select a center stone up to 12 by 6 millimeters, offering a striking balance between bold presence and refined elegance.

Handcrafted in our Williamsburg studio, the band’s warm yellow gold is carefully shaped and polished to a smooth comfort fit, designed for daily wear without catching or discomfort. The three-stone setting features delicate prongs that cradle side stones securely while maintaining a low profile, allowing light to dance freely across each facet.

Each lab-grown diamond chosen for this mounting reflects a commitment to ethical sourcing and environmental mindfulness, aligning with a modern approach to fine jewelry.

The elongated marquise shape visually lengthens the finger, making it an excellent choice for those seeking a distinctive yet wearable statement. Its semi-set nature offers flexibility to customize the center stone to your personal style and budget.

Should you need resizing or assistance selecting the perfect center diamond, our Brooklyn studio team is ready to guide you through every step with care and expertise.

Explore this semi-set marquise engagement ring in person at our Williamsburg workshop or begin your custom design journey online, where thoughtful craftsmanship meets your vision.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where ethical craftsmanship and local artistry converge to create pieces meant for a lifetime.

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.