De Beers Is Closing Its Man-Made Diamond Jewelry Business

De Beers is closing down its lab-grown diamond business, cementing an earlier decision to stop selling the stones as jewelry as it commits to traditional gems.

The diamond miner announced last year that it would cease selling its own man-made gems, but was unsure what it would do with the Lightbox business that made them. On Thursday, it said it’s discussing the sale of some assets — including inventory — with potential buyers.