Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of the marquise diamond, its tapered points tracing a delicate arc that seems to cradle the hand. This three-stone semi-set ring features an 8 x 4 mm marquise center, poised to be paired with your choice of lab-grown brilliance.

Crafted from warm 18K yellow gold, the band’s gentle curve and polished finish offer a comfortable fit that sits low against the finger, ideal for everyday wear. Each prong is meticulously shaped to secure the stone while allowing light to dance freely through its facets, enhancing the marquise’s signature sparkle.

Our commitment to sustainability is reflected in the ethically sourced lab-grown diamond, offering clarity and fire without compromise. This setting’s modest profile and smooth edges make it glove-friendly and perfect for stacking alongside complementary bands.

Designed for those who appreciate subtle drama and refined craftsmanship, this ring balances architectural grace with romantic allure. Resizing is available to ensure a precise fit, crafted in-studio with care and attention.

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

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values 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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.