Lab-Grown Diamond Engagement Ring

Light catches the elongated points of a marquise diamond, casting a subtle, tapered glow that draws the eye along the finger. This semi-set halo mounting in platinum frames a 12 x 6 mm center stone with a delicate ring of pavé, designed to enhance brilliance without adding bulk.

Crafted for everyday wear, the low-profile setting keeps the silhouette sleek and unobtrusive, while the platinum band offers enduring strength and a cool, smooth feel against the skin. Each curve and prong is meticulously finished in our Williamsburg studio, ensuring a secure hold and a refined polish that resists daily wear.

Our commitment to ethical jewelry is reflected in the lab-grown diamond clarity and sustainability embedded in every piece, offering a conscious alternative without compromise.

The elongated marquise shape naturally elongates the hand, making this ring ideal for those who appreciate architectural elegance paired with practical comfort. Its slim profile fits comfortably beneath gloves and stacks seamlessly with other bands.

Should you need resizing, our in-studio experts handle adjustments with care to maintain the integrity of the setting and metal.

Explore this semi-set halo in person at our Williamsburg studio or begin your custom design journey online, where expert guidance awaits.

Haejin Jewelry stands as a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending 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.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.