Item:Honeycomb opal pendant suspended from a braided onyx hide cord

honeycomb opal pendant suspended from a braided onyx hide cord
Look:	Set within a three-pronged niniam mount, a faint black image of a scorpion can be seen within the translucent opal.
Weight:	2 stones
Metal:	Yes
Uses:	15
Appraised Cost:	Unknown
Properties:	This is jewelry. This item is worn in the neck slot. This item prevents the user from being located.
Dimensions:	1 length x 1 width x 1 height
Sources:	Source is Droughtman's Challenge 444/Incidental loot, Droughtman's Challenge 441/Incidental loot

Small magical currents trace across the surface of the pendant.
You recognize the pattern as a manifestation of Lunar magic.
The pendant is scribed with a minor invisibility spell and has fifteen charges left.
The pendant is enchanted to render the wearer magically unlocatable when properly rubbed.
Assessing the complexity of the enchantment, you think it would require adept-level skill with Arcana in order to use.