What Foliated Rock Has The Highest Metamorphic Grade?
What Foliated Rock Has The Highest Metamorphic Grade? What foliated rock has the highest metamorphic grade? The rock that has the highest metamorphic grade is gneiss. Gneiss is a metamorphic rock that has foliation, or a layered-look. What rock has highest metamorphic grade? Gneiss, the highest grade metamorphic rock, contains bands of easily visible quartz,