Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along a graceful arc. This semi-set three-stone engagement ring foundation in 10K yellow gold invites your choice of center stone, designed to showcase a 9 x 4.5 mm marquise with architectural drama and a subtle vintage allure.

Handcrafted in our Williamsburg studio, the band’s gentle curve and secure prong settings are shaped for everyday wear, offering a low-profile comfort fit that slips easily beneath gloves or alongside stackable bands. Each piece is meticulously finished to a soft polish, ensuring the warmth of yellow gold complements the diamond’s fiery facets without distraction.

Our commitment to ethical jewelry shines through the exclusive use of lab-grown diamonds, reducing environmental impact while delivering exceptional clarity and brilliance.

This ring suits those who appreciate refined craftsmanship and a distinctive silhouette that elongates the finger, perfect for a wearer seeking both elegance and practicality in daily life.

Should you need resizing or prefer a custom center stone, our Brooklyn studio offers personalized consultations to guide your design journey with care and expertise.

Explore this semi-set marquise engagement ring in person at our Williamsburg workshop or begin your custom design online—where thoughtful artistry meets modern romance.

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