While wearing this amulet, you are hidden from divination magic. You can't be targeted by such magic or perceived through magical scrying sensors.
Notes: Deception, Jewelry
DM's: If you want your main villain to have some privacy from pesky adventurers while going about their evil scheme, have them purchase one of these. :)
Likely should extend that comment to more than just villains. Rulers, diplomats, spies, religious leaders, thieves guild leadership, business leaders, all would have a reason to fork over the gold for this sort of item. It does bring up questions of if only the user not visible to divination magic or does it create a small imperceptible zone around a user. If two characters are having a conversation, one has an amulet and the other does not, can half the conversation still be heard or seen. The answer should be a DM decision of course. An amulet that creates a 20 ft. sphere of no detection would be more rare and powerful compared to an amulet that only masks the wearer, so there is room for scaling as needed.