Pōhaku (stone)

Summary: 
Pōhaku was used for different purposes including; sport, a part of fishing apparatus, general tool for carving, sanding, sharpening, polishing, filing, as part of religious purposes, use for daily life work and weapons.
Description: 

Chalcodony (Hydra-silicate). Dimension (at widest point): 4 x 2 1/4 x 2 3/8 inches, Color: Sulfur Yellow with both white and black spots. Weight: 14.2 oz.