So the we have two magic gems and a magic rapier? I will have to dedicate three spell slots to Identify after their rest. I can identify the scroll now with a read magic cantrip and can try to identify the potions with spellcraft.
This is kind of a special case for this scroll. Markis can read it fine so it is definitely arcane, but he would have an uneasy feeling about it and might think twice about scribing it. (Remember there were other types of magic in the tower that Markis would not be associated with.) Heck, he might not even want to use it!
I'll be unavailable for the next few days as Thursday marks the start of the annual BOGA game retreat when I will be playing boardgames all day long and not doing online stuff at all. I will return either Sunday night or Monday morning