Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your hand as an 8 x 4 mm marquise diamond catches the light with its tapered brilliance. This solitaire semi-set ring offers a refined foundation, crafted in 18K white gold for a sleek, low-profile silhouette that slips comfortably beneath gloves and daily wear.

Hand-finished in Williamsburg, the mounting balances secure prongs with a streamlined shank, ensuring the diamond’s architectural shape remains the focal point without excess height. The comfort fit band is polished to a gentle sheen, designed for everyday grace and ease.

Each piece embraces lab-grown clarity, reflecting a commitment to sustainable luxury without compromise. The marquise’s distinctive form suits those who appreciate a blend of classic drama and modern minimalism, especially flattering on slender fingers or when stacked with complementary bands.

Should you wish to customize the center stone or adjust sizing, our Brooklyn studio offers expert guidance and precise craftsmanship with attentive lead times. Explore this semi-set as a starting point for your unique engagement vision.

Visit us in Williamsburg or begin your custom design journey online—where thoughtful expertise meets ethical artistry.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, combining ethical craftsmanship with local artistry to create pieces made for daily life and lasting meaning.

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.