Promise by Effy is a jewelry brand that celebrates the moments that shape us—big or small, they define who we are. Crafted with care in New York City, each piece is a testament to life’s beauty, featuring the finest lab-grown diamonds and precious metals. Backed by the Effy family’s decades-long commitment to quality, every design is created with meaning, offering you something unique to tell your personal story. With a fully transparent supply chain and a dedication to responsible sourcing, Promise by Effy ensures you not only look beautiful but feel good about what you're wearing too.