item weight and special material

[jonathan demers]

i never been sure about this , might has well ask

lets say i wanna make a mithral longsword , normal weight is 4 lbs
mithral is 500gp/lbs and it also says that item made of it weight half has much than regular item
so the longsword would weight 2 lbs

does the 500gp/lbs is for the regular weight or the modified weight ?
(2000 or 1000 gp ?)

thanks for your time

[blackbloodtroll]

Regular weight.