Chalk Bust Graffiti Man Art Relic by Seletti

Okay, this is pretty cool, although I'm not quite sure how it works.
On NotCot, they mention that this bust, available in female or male versions, is covered with a chalkboard finish so it can be graffiti'd in whatever form you like.
However, when you check out
The Story of Obsidian

Well, no, not that Obsidian. We're talking about his namesake. The volcanic rock that apparently was the subject of a recent lecture by an archaeologist at the University of Oregon.
By a special X-ray procedure archaeologists can match the mineral composition to a specific volcanic source in the Western