This was sketched using sienna colored ink from the set of little bottles I have and one of the glass pens that came with it. I bought these golden beets at a farmers market the other day. I hope to do a watercolor of them before they go bad or I cook them. lol
I posted this on Facebook this morning and someone asked what kind of pen was made of glass. Here is a photo of the pens and the set they came in.The threads at the end of the pen hold the ink as you sketch or write.