Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic gleam that draws the eye along its graceful points. This semi-set engagement ring invites you to select a center stone measuring 12 by 6 millimeters, offering a striking balance between presence and elegance.

Crafted from warm 18K rose gold, the mounting features a refined low-profile setting accented with delicate side stones that enhance the diamond’s architectural shape without overwhelming it. The band’s smooth finish and subtle taper ensure comfort for daily wear, while the precise prong work secures the stone with quiet confidence.

Each ring is shaped in our Williamsburg studio, where sustainable practices guide the creation of lab-grown diamonds—clear, traceable, and ethically sourced to reflect modern values.

The elongated marquise cut naturally complements slender fingers and lends an elegant elongation to the hand, making it an excellent choice for those who appreciate a bold yet refined statement. Its low profile and smooth edges also make it glove-friendly and easy to stack with complementary bands.

Should you need resizing, our in-house artisans handle adjustments with care to maintain the ring’s structural integrity and finish.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits to bring your vision to life.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, combining expert craftsmanship with ethical sourcing and a deep connection to New York City’s creative spirit.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

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