I'm trying to find the replacement for the ring of evermemory from baldur's gate, I think it was relabelled the reafing ring for baldur's gate 2? Anyone know where I get it?

The wiki says Nadinal in the Harper hold, I don't seem to be able to locate them though.

It is called the 'Reaching Ring' or the 'Ring of Wizardry'. Nadinal is one of the mercenaries who only spawns (with Galvarey) as part of Jaheira's personal Harper quest.

You can get another Ring of Wizardry -- your apprentices can make it -- if you are a mage and you accept the Planar Sphere as your stronghold.

There's also a Ring of Acuity dropped by Lavok.