Nondetection

Nondetection (or non-detection ) was an abjuration spell that hid the subject from divination and scrying.

Effects
The warded creature or object became difficult to detect by divination spells such as clairaudience/clairvoyance, locate object, and detection spells. Nondetection also prevented location by such magic items as crystal balls.

If cast on a creature, nondetection warded the creature's equipment as well as the creature itself.

Components
A pinch of diamond dust worth 50 gold pieces.