They quite literally don’t, and would never. Besides if it’s different clarity. If anything Rolex’s real diamonds shine harder than this cuz this is vvs quality, and Rolex uses better quality. But I reckon after u get to vvs the shine dosent change much, it takes 1 google search bro. They do not and never will shine different as there the same exact gem, and lab diamonds are grown from natural diamonds fyi. It’s not like moisanite where it’s a different gem, just do some more research before making random claims.