What are the names of the dice-shaped beads?

This kind of bead is called octagonal bead.

The standard octagonal bead is a bead composed of eight faces, each face is equal in size, and the whole looks like a eight-character dice.

Illicium verum originated in India and Central Asia more than 1000 years ago, and was later introduced to the Central Plains, Tibet in China and Japan in the East through the Silk Road. It is loved by nobles and ministers of past dynasties, and even regarded as a status symbol.