Company Description. Who We Are: Lightbox. Our mission is to make the sparkle of a diamond available for more people, more often. We’re constantly innovating our world-leading technology—to make bigger, better, and more accessibly priced lab grown diamond stones. Lightbox Jewelry launched in 2018 and was backed by a $100m investment from De Beers Technologies to bring its patented diamond synthesis technology to consumers – offering them laborato...