Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a delicate shadow that dances with every movement. This semi-set engagement ring invites you to choose a center stone that embodies both drama and grace, its 12 by 6 mm proportions stretching elegantly across the finger.

Crafted in warm 14K yellow gold or crisp 14K white gold, the mounting balances a slender band with secure prongs designed to cradle the stone low against the hand. The solitaire setting emphasizes the marquise’s signature tapered points, while the smooth finish ensures a comfortable fit for daily wear.

Each ring is made to order in our Williamsburg studio, where lab-grown diamonds are selected for their clarity and brilliance, reflecting a commitment to sustainable, ethical jewelry without compromise.

The low-profile design suits those who appreciate refined understatement, ideal for stacking or wearing solo. Its shape naturally elongates the finger, flattering a variety of hand sizes and styles.

Resizing is available to ensure a precise fit, and our team is happy to guide you through the selection and setting process, whether in person or online.

Explore this semi-set marquise solitaire in our Brooklyn studio or begin your custom design journey from home—each piece thoughtfully crafted to become part of your story.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to expert craftsmanship and ethical lab-grown diamond engagement rings, blending modern design with local authenticity in every creation.

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.