When gneiss goes through metamorphism at a higher temperature then state so it has a higher what?

When gneiss undergoes metamorphism at a higher temperature, it becomes more felsic and may develop a higher grade of metamorphism, resulting in the formation of more stable minerals like garnet or kyanite. This process can lead to an increase in the rock's foliation and banding, as well as an overall increase in its density and strength. Consequently, the gneiss will exhibit characteristics of higher metamorphic grade, indicating it has undergone significant changes due to elevated temperature and pressure conditions.