I think it's the Scathing Rings I'm missing. (I have the neck.) There's also the Spinner Neck (I think.) Still, that Briar neck this week is a really sweet get.
For me it would be golden Perfect Olorime jewelry since I am 2 lazy to get those purple and golden them It would surely give me a push to get 2 other pieces in perfect condition
What if they started to sell weapons as well with jewellery
Would be faster to farm or buy them tbh. With the once a week RNG you'll probably be seeing stuff like Hulking Draugr resto staves. The main appeal of this vendor is usually getting the monster head in the right trait and golden jewellery (because upgrading is expensive af, or you can sell it for a lot).