Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points tracing a delicate arc that seems to extend the hand’s natural grace. This semi-set platinum mounting awaits your choice of a 6 x 3.5 mm marquise center, designed to cradle the stone with slender prongs that lift it just above the band for subtle brilliance.

Crafted in Williamsburg, the band’s polished platinum offers a cool, weighty feel that balances durability with refined comfort. The low-profile setting keeps the ring close to the finger, ideal for daily wear and layering alongside wedding bands or stackable accents without catching on fabric.

Each piece reflects our commitment to ethical jewelry: the lab-grown diamond you select will embody clarity and sparkle without the environmental cost of mining. This approach aligns with a modern ethos of sustainability and mindful luxury.

Its slender shape and modest scale suit hands that appreciate elegance with a whisper of drama—perfect for those who favor a ring that feels personal, intimate, and thoughtfully designed. The mounting’s semi-set nature invites you to collaborate on the final stone, ensuring your engagement ring is uniquely yours.

Should you need resizing or guidance on selecting the ideal marquise cut, our Brooklyn studio offers attentive, pressure-free consultations. Lead times vary slightly depending on stone choice, but we keep you informed every step of the way.

Visit us in Williamsburg or begin your custom design journey online—experience the quiet confidence of a ring made for everyday moments and lifelong stories.

Haejin Jewelry is a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship meets 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.

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