De Beers has significantly reduced the prices of its Lightbox lab-grown diamonds, responding to recent developments in the sector. The standard line, featuring I to J color diamonds, will now retail for $500 per carat, down from $800 per carat—a 37.5% reduction, according to a statement from the De Beers subsidiary on Friday. Diamonds with D to F color, VS clarity, and an excellent cut will be priced at $900 per carat, a 40% decrease
![]()
