I agree that lab-created diamonds are going to be the wave of the future. But educating consumers is going to be tough. For instance most people don't understand the difference between lab-created gemstones and simulated gemstones.
DeBeers' pricing is very interesting. https://lightboxjewelry.com/pages/our-pricing They're setting the stones in cheap costume-jewelry settings--sterling, 10K, gold-plated. So as not to impact their buyers of mined diamonds no doubt. Yet the pieces are very expensive. For a 1/4 carat-total pair of diamond studs in 10K gold the price would be $400. It would be $100 less if the setting is silver.
I did a couple of really quick searches on ready to sell earring studs from James Allen and Blue Nile and the price for .25ctw was between $260 and $400 in 14-18K gold. These would be uncerted stones, of average quality color and clarity, with no mention of cut quality. So this is probably a fair comparison if anyone is looking for a baseline comparison to the cost of the new DeBeers "fashion" diamonds as opposed to the cost from one of the big name online vendors for mined stones.
https://www.jamesallen.com/fine-jew...brilliant-diamond-earrings-025-ctw-item-17161
https://www.bluenile.com/diamond-jewelry/diamond-earrings/stud?elem=head&oid=14299&track=main1
I think the fact that the article states that these items will be available online only is also very important. That is also one reason why the really well known online vendors generally have lower prices than brick and mortar stores for a similar quality piece- no physical store overhead.