Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated curves of an 8 x 4 mm marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set three-stone ring invites you to select a center stone that balances architectural drama with delicate refinement.

Crafted from warm 10K yellow gold, the band is shaped and polished in our Williamsburg studio to a smooth comfort fit that sits low against the finger. The side stones are securely nestled in a classic prong setting, designed for daily wear without catching or shifting.

Each lab-grown diamond offers clarity and brilliance with a smaller environmental footprint, reflecting a commitment to ethical jewelry without compromise.

The slender profile and balanced proportions suit hands that appreciate subtle statement pieces—ideal for stacking or wearing solo with ease. Its low profile ensures compatibility with gloves and everyday activities.

Should you wish to adjust sizing, our Brooklyn workshop provides expert resizing to maintain the ring’s integrity and comfort.

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

Haejin Jewelry blends Brooklyn craftsmanship with lab-grown diamond expertise, creating engagement rings that honor both ethical values and refined design.

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.