When shaken, it emits a distinct rattling sound. Based on this, some have concluded that it was a plaything intended for the amusement of the King. It is shown laying the floor in three portraits of Fathali Shah.
On the otherhand, the rattling sound cound simply be due to a loose gem piece inside the sphere, so others have theorized that it is a symbol of power - but there is no history of such an item being used in that capacity.
The item wieghs 257 grams (about 10 oz.) and is made entirely of gold, diamonds, emeralds, rubies and spinels.