Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, dramatic sparkle that draws the eye along the finger. This semi-set engagement ring offers a handcrafted 18K yellow gold band, its warm glow a subtle contrast to the sharp geometry of the 9 x 4.5 mm marquise center stone you select.

Each band is meticulously shaped and polished in our Williamsburg studio, with a low-profile setting designed for everyday wear. The artisan finish reveals delicate accents that frame the stone without overpowering its distinctive pointed ends, ensuring comfort and glove-friendliness.

Our diamonds are lab-grown, offering the clarity and fire of mined stones with a fraction of the environmental impact. This ethical choice aligns with a modern commitment to sustainability without compromising brilliance.

Ideal for those who appreciate architectural elegance paired with handcrafted detail, this ring complements slender fingers and pairs beautifully with stackable bands. The semi-set design invites you to choose a marquise diamond that reflects your personal story.

Resizing is available to ensure a precise fit, and our Brooklyn studio welcomes you to explore custom options or begin your design journey online at your convenience.

Haejin Jewelry crafts each piece with expert care in Brooklyn, blending ethical lab-grown diamonds with artisan techniques to create engagement rings that resonate with modern romance and local authenticity.

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.