Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated silhouette of a marquise diamond, it casts a slender, luminous shadow that seems to dance along the finger. This semi-set platinum mounting awaits your choice of a 9 x 4.5 mm marquise center stone, designed to cradle its tapered points securely while showcasing the gem’s signature brilliance.

Crafted in platinum for enduring strength and a cool, smooth feel, the setting features a low-profile design that rests close to the skin, ideal for daily wear without catching. Each prong is meticulously shaped and polished in our Williamsburg studio, ensuring a refined finish that complements the diamond’s dramatic geometry.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, offering clarity and sparkle with a lighter environmental footprint.

The slender shape of the marquise naturally elongates the hand, making this solitaire mounting a graceful choice for those who appreciate subtle drama. Its comfort fit and modest height allow for effortless stacking or pairing with a wedding band.

Should you need resizing or prefer a custom consultation, our Brooklyn studio welcomes you to explore options with no pressure and full transparency.

Begin your journey with a visit to our Williamsburg atelier or design your ring online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces meant for everyday elegance.

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.