This was just a muck around with some ideas I had... apparently I was designing a staff for a character from one of my stories. Specifically, an OC from a fanfic I've been debating with myself about turning into a non-fanfic set 20ish years after the end of Final Fantasy 7.
I think I got the idea from a picture in one of my drawing books of a staff with a stone that had been grown around by the staff's wood- well, that was the idea I was aiming for, at least.
I was also playing around with what I could do with a blue metallic gel pen, how to shade the wood and whether I could blend ble and green in nicely with each other.