There's no page on Amazon explaining exactly what the Hidden Gems sale is all about, but looking over the deals that are now active tells me it's about highlighting products from companies most people won't have heard of.
Amazon Black Friday 2019 is set to be the online retailer's biggest sale ever and run for eight days from 22 November until 29 November.
And make sure to keep checking back, because Amazon being Amazon there are bound to be more deals every day.
During the Amazon Black Friday Sale, new deals will be announced every day and there will also be thousands of 'Lightning Deals' - products available at a discount, in limited quantities, for a short period of time - with new deals becoming available as often as every five minutes.
Products in the "Black Friday Price Now" sale will be at their lowest possible price, so they won't be discounted any further on November 29.
While it's pretty useful to have the opportunity to plan your Black Friday savings in advance, some of Best Buy's biggest deals actually start this week, and you don't have to wait until the end of the month to start shopping.
To stay up-to-date with all of Best Buy's Black Friday offers and deals, you can visit their website here.
Amazon's free, London-based "Home of Black Friday" customer experience, which houses hundreds of deals and allows visitors to try out the products and preview the latest screenings from Prime Video, will take place at The Arches, 26 Leake Street, Waterloo, from Thursday 28th November to Sunday 1st December.
The sales will kick off on Friday, November 22 with discounts on Amazon's Fire tablets.