Lab-Grown Diamond Engagement Ring

Light catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along a graceful arc. This semi-set platinum solitaire ring offers a refined foundation for a 9 x 4.5 mm marquise center, emphasizing sleek lines and subtle presence.

Crafted in platinum, the mounting is designed with a low-profile setting that sits close to the finger, ensuring comfort for everyday wear without sacrificing security. The polished finish and precise prong work highlight the diamond’s shape while maintaining a streamlined silhouette that slips easily beneath gloves or sleeves.

Each piece reflects a commitment to sustainability through the use of lab-grown diamonds, combining clarity and brilliance with an ethical footprint. The marquise cut’s distinctive form elongates the finger, making it an elegant choice for those who appreciate architectural geometry and understated drama.

Ideal for wearers seeking a solitaire that balances bold shape with practical design, this ring’s semi-set state invites you to select a center stone that resonates personally. Resizing is available to ensure a tailored fit, crafted with care in our Williamsburg studio.

Explore this mounting in person or begin your custom design journey online—where Brooklyn craftsmanship meets thoughtful, modern engagement jewelry.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a distinct local sensibility.

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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