Tiffany does the same, where you don't get a report til you buy the item and then a few weeks later it shows up. That, to me, is not acceptable.
I would personally not buy studs from the brand, unless you MUST have the brand for mind-cleanliness. I can gladly assist you in finding studs from another vendor that will blow your mind.
I know when it comes to engagement rings, the brand matters to a lot of people, and I get that. Which is why I am so hellbent on working through the inventory when we are on that mission. But for studs? Meh. No one is going to be up against your head saying "are those Cartier?! I can totally tell they're from the red box." nor are they going to know if it's a VVS stone.
+1 I totally agree with you on this. Studs are studs & only the wearer will know where they came from. What people notice is the sparkle in your ear, not the store where it came from. My brother gave his wife a pair of earrings for their last anniversary. He worked with a jeweler he often used to pick out 2 1 ct matching stones & had them set for her. Their not designer but they also didn't come with the designer price tag. I think he chose H color, VS2, excellent brilliant cut. Those stones will stand up to just about any designer diamond studs.