I am considering buying an engagement ring online, do these websites offer discount on black Friday?

I am going to propose soon and want to purchase a lab growth diamond online. After doing a brief research, i think either brilliant earth or james allen will suit my needs. (I see lots of redditors recommend adadiamonds, but it is not quite user friendly as it doesnt provide a list of available dimaonds on their website)

Do these sites offer a good deal on black Friday? Thanks.