Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a marquise diamond, casting a slender, dramatic silhouette that draws the eye along the finger’s natural line. This semi-set solitaire ring awaits your choice of a 7 x 3.5 mm marquise center, designed to showcase the stone’s distinctive tapered shape with architectural grace.

Crafted in warm 18K yellow gold, the mounting features a low-profile setting that sits close to the skin, balancing elegance with everyday comfort. The band’s smooth finish and subtle taper ensure a secure fit that complements stacking or solo wear, while the prongs are engineered for durability without excess bulk.

Each piece reflects Haejin Jewelry’s commitment to ethical sourcing, featuring lab-grown diamonds that offer clarity and brilliance with a smaller environmental footprint.

Ideal for those who appreciate refined geometry and a ring that integrates seamlessly into daily life, this solitaire’s slender profile suits slender to medium finger sizes and pairs effortlessly with wedding bands or delicate stackables.

Should you need resizing or prefer a custom consultation, our Brooklyn studio offers personalized guidance with attentive care and transparent timelines.

Explore this semi-set marquise solitaire in our Williamsburg studio or begin your custom design journey online—where craftsmanship meets conscious luxury.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values and a distinctly local sensibility.

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.