Pendulums have been used in a multitude of spiritual practices, dowsing, and divination all over the world. At least as far back as ancient Rome and Egypt. 
 
Length: approx 2.25 in (5.7 cm)
Width: approx 0.75 in (1.9 cm)
Weight: 1 oz
 
Includes cord to wear the pendant as a necklace.