Green Frog on Clear Glass Ink PenThis handmade glass pen is sweet as it can be the perfect pen for writers and frog lovers alike! I made this pyrex glass pen in my Colorado studio. FREE gift box included. The pen itself is made of clear glass. On the end is a hand sculpted tiny green frog! The pen writes in black ink, and is 6 inches long and 9mm wide. The pen can easily be refilled to either change the color of the ink or to replace it when it runs out.