I can't purchase more Runestone of Suffusion from Corri now that I've started the Tier 2 Obsidian Armor Achievement. There should be a note in the tooltip when purchasing this item since currently it doesn't specify about purchasing more and the wiki is no help on this matter either. From what I understand, we have to complete the Tier 2 Achievement before being able to buy another but that information is nowhere to be found before I had to search the internet. Please add that info to the Runestone of Suffusion tooltip so that we aren't left in the dark!