Hand-forged steel pendulum. It also works great as a pendant and is a lot of fun to twist and fiddle with.
 
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 0.5 in (1.3 cm)
 
Includes cord to wear the pendant as a necklace.