Peacock Ore also known as Chalcopyrite. Colors  show through a gray natural stone with metallic greens, blues, purples. 3 1/2 - 4 on the mohs scale.
apx 1"-1 1/2"

Use in jewelry, mixed media 

Sold in 1/4lb and 1/2lb bags

Peacock Ore - large

$7.25Price