Pieces of Hematite crystal that have been polished and carved into the shape of an oval palm stone.  They're ideally sized to fit into the palm of the hand and would make an excellent worry stone.  These stones have shiny gunmetal grey colouring. 

This stone stimulates concentration and focus.

See more palm stones & pebbles here

Size: 7 x 5 x 1 cm approx measured at their largest points
Weight: 121 - 143 grams approx
Country of origin: Brazil