Adding +damage jewel to a unique

If I add a +12 max damage jewel to a unique does that +12 damage get multiplied by the %damage increase as part of the weapon attributes? Or does it get added on after the % damage increase is multiplied by the items base damage?|||It gets added after.|||But before off-weapon %ed is applied (from skills, stats, auras and non-weapons). That usually means that +dmg is worse than a bonus to on-weapon %ed, but better than a bonus to off-weapon %ed.