Используйте «encrustation» в предложении

1. The tunnel debouched into a wide room before the moonlight played out, an empty cavern of no great dimensions, but with a lofty, vaulted roof, glowing with a phosphorescent encrustation, which, as Conan knew, was a common phenomenon in that part of the world

2. She blushed, feeling utterly naked in her gold-and-jewel encrustation of state