Editing WoW:ItemString (section)

=== Enchant Ids and Suffix Ids ===
Adding of enchant, jewel, and bonus stat information to the tooltip appear to be handled on the client side with out any kind of validation.  By altering the item string in an item hyperlink you can add any enchant or any bonus stats to any item and still pass it to clients via chat, or display a tooltip for it. The Item name must match that of the itemId combined with the suffix or you will be disconnected if you try to link the item to others. suffixIDs can be negative (see Scaled Random Suffixes below).

'''NOTE:''' Even though the EnchantId page lists shaman weapon buffs, player generated Shaman Buffs do not appear in the link when using GetInventoryItemLink().