Chinese Cloisonne Worry Balls (Meditation Balls). Baoding Balls.

Large one is 1.5" diameter

Two smaller ones are 1" diameter

All are colorful and attractive.

The two smaller ones have an attachment making it possible to use as a pendant. See photos.

No chips. No cracks. No restoration.

Research information:  Baoding balls are used by rotating two or more balls repeatedly in the hand. Intended to improve finger dexterity, relax the hand, or aid in the recovery of muscle strength and motor skills after surgery, Baoding balls work similarly to Western stress balls.