For identification, any Lightbox lab-grown diamonds of 0.2 carats or above will carry a permanent Lightbox logo inside the ... said Bruce Cleaver, CEO, De Beers Group. De Beers will spend $ ...

De Beers Group is launching a new company and U.S. production ... New lab-grown stones of 0.2 carats or above will have a Lightbox logo inside. Although invisible to the eye, the logo can be ...