This rock is a slice of Banded Iron Formation (BIF), specifically known as Jaspilite (composed of hematite/magnetite and dark red jasper). Perfect for lapidary or display. 

Details--
 - Weighs 312 grams (11 oz)
 - 6" x 4.5" (0.7 cm thick)

Condition -- Prior lapidary cutting visible on surfaces and edges. Please see photos. 

Ships within one day.