i know if youre a mage and have the planar sphere you can get the apprentices to make a neat one for you that gives a few extra high level spells..and the desc will say your apprentices made it....and from lavok you can get the ring of acuity..but only gives a few low level spells
but ive heard you would get a ring of wizardry from an attacker during the jaheira harper quest..my question is, is it another ring of acuity or an entirely new wizardry ring? if yes, plesae tell its stats