Use 'earthiness' to describe things that remind you of nature's raw and pure qualities. The earthiness of the wooden furniture added to its charm.
Pro Tip 2/3
Tangible Texture
When something has a tactile quality, 'earthiness' can convey its natural, unrefined state. The earthiness of the handmade paper was evident in its texture.
Pro Tip 3/3
Grounded Atmosphere
'Earthiness' can set a mood that feels grounded and stable, like returning to one's roots. The cabin's decor exuded a certain earthiness that felt homey.