This is one of Nathan's fun desert scenes, featuring his saguaro millie and killer UV glass mixed into the desert sand. It has a polished viewing window cut into it which makes it SOOO fun to explore in hand! Such a cool marble, and then it also comes with a polished slice/coin of the cacti millie as well! I really love this one, being a desert dweller myself. Signed 'NM #51 2023' and comes tucked safely in a special Middleton Glassworks lidded wooden box with spots for both the marble and millie slice!