gneiss
/naɪs/
noun
- A hard, coarse-grained metamorphic rock with bands of different minerals, often used in construction and decoration.
- Geologists identified the mountain as mostly gneiss from the Precambrian era.
- The old building's foundation was made of gneiss, giving it a sturdy, layered look.
- The countertop was polished gneiss, showing beautiful bands of black and white.