Imagine the subtle drama of a marquise diamond, its elongated silhouette catching light with a poised brilliance that draws the eye along the finger. This semi-set engagement ring foundation in platinum offers a sleek, modern-minimal frame designed to highlight a 9 x 4.5 mm marquise center stone of your choosing.

Crafted in our Williamsburg studio, the platinum band is polished to a mirror finish, its low-profile setting ensuring comfort and everyday wearability. The mounting’s clean lines and structural clarity create a confident backdrop, while delicate accent settings promise a refined sparkle without distraction.

Each piece is thoughtfully made with lab-grown diamonds, reflecting a commitment to ethical sourcing and environmental mindfulness without compromising on clarity or fire.

The slender band suits hands that appreciate subtle elegance and works beautifully for stacking or pairing with wedding bands. Its low profile fits comfortably beneath gloves and daily wear, making it a versatile choice for those who favor modern design with practical grace.

Should you wish to adjust sizing or explore custom accents, our Brooklyn studio offers personalized consultations to ensure your ring fits perfectly and reflects your vision.

Visit us in Williamsburg or begin your custom design journey online—experience how Haejin Jewelry blends expert craftsmanship with ethical clarity in every lab-grown diamond engagement ring we create.

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.