Lab-Grown Diamond Engagement Ring

Imagine the quiet moment when a marquise diamond catches the light, its tapered points drawing the eye along a graceful silhouette. This semi-set solitaire invites you to choose a 6 x 3.5 mm center stone, whose elongated shape subtly elongates the finger with a refined, vintage-inspired drama.

Crafted in warm 14K yellow gold, the mounting balances classic allure with modern precision. The slender prongs cradle the stone securely while allowing maximum light to pass through, enhancing brilliance without excess height—ideal for daily wear. The band’s gentle curve and polished finish ensure a comfortable fit that feels natural against the skin.

Each piece is handcrafted in our Williamsburg studio, where expert jewelers inspect every detail to meet exacting standards. The choice of a lab-grown diamond reflects a commitment to ethical jewelry, offering clarity and sparkle with a smaller environmental footprint.

This solitaire suits those who appreciate subtle statement pieces—its low-profile setting pairs effortlessly with stacking bands or stands alone as a quiet emblem of devotion. The elongated marquise shape flatters slender fingers and complements a variety of hand sizes.

Should you wish to adjust sizing, our studio offers careful resizing to maintain the ring’s integrity and comfort.

We invite you to explore this semi-set marquise solitaire in person at our Williamsburg studio or begin your custom design journey online, where thoughtful craftsmanship meets your vision.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s creative spirit.

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.