Recently, Lightbox introduced loose diamonds under the same linear model, but now with a 2-carat stone being priced at US$1,600 (AU$2,650).

De Beers used Lightbox to create a ‘transparent’ and ‘affordable’ linear pricing model at US$800 (AU$1,350) per carat regardless of whether the piece of jewellery consisted of a one-carat diamond or two half carats, or even four-quarter carat stones.