Lab-Grown Diamond Engagement Ring

When light catches the elongated silhouette of a marquise diamond, it reveals a subtle drama that draws the eye along the finger’s natural line. This semi-set platinum solitaire frame awaits your choice of a 10 x 5 mm center stone, offering a sleek, low-profile foundation designed for everyday wear.

Crafted in platinum, the mounting balances durability with refined comfort, its smooth edges and secure prongs engineered to sit close to the hand without catching. The solitaire setting emphasizes the marquise’s tapered points, allowing the diamond’s brilliance to take center stage while maintaining a streamlined profile.

Each piece reflects our commitment to ethical jewelry, featuring lab-grown diamonds that offer clarity and sparkle with a smaller environmental footprint. The mounting’s subtle weight and comfort fit make it ideal for those who prefer a ring that feels as natural as it looks.

Perfect for hands that appreciate architectural elegance, this setting pairs well with slender fingers or as a statement solitaire on any hand size. Its low profile ensures compatibility with gloves and stacking bands alike.

Should you need resizing or wish to explore custom finishes, our Brooklyn studio offers personalized consultations with transparent timelines and care guidance.

Visit us in Williamsburg or begin your custom design journey online—experience the thoughtful craftsmanship behind every Haejin Jewelry creation.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local artistry in New York City.

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.