55mm in diameter, 300g in weight. 

Arfvedsonite is a sodium amphibole mineral, it has a hardness of 4-5 on the mohs scale. Arfvedsonite is a fibrous and brittle stone. You will find that arfvedsonite has blue-green, yellow-browns and gray-violet colours in it.

It is thought that arfvedsonite will aid in relieving nightmares and change dreams for the better with curiosity and fascination.