Lab-Grown Diamond Engagement Ring

When sunlight catches the elongated silhouette of a 12 x 6 mm marquise diamond, it casts a striking, tapered gleam that draws the eye along the finger’s natural line. This semi-set halo engagement ring foundation in warm 18K rose gold offers a delicate frame designed to cradle your chosen center stone with precision.

Crafted in Williamsburg, the band’s low-profile setting ensures a comfortable fit beneath gloves or daily wear, while the halo mount adds subtle brilliance without excess height. Each curve is hand-finished to a smooth comfort fit, balancing durability with refined elegance.

Our commitment to lab-grown diamonds means your ring begins with a stone of exceptional clarity and ethical provenance, reflecting a modern approach to sustainability.

Ideal for those who appreciate a blend of architectural grace and everyday practicality, this mounting suits slender to medium finger sizes and pairs effortlessly with stacking bands or wedding rings.

Should you need adjustments, resizing is available to ensure your ring fits perfectly over time.

Explore this semi-set halo in our Williamsburg studio or start your custom design journey online, where expert guidance meets thoughtful craftsmanship.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, combining ethical craftsmanship with local expertise to create pieces made for life’s most meaningful moments.

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.