Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. They are fragments of a coral reef that was originally deposited during the Devonian period, about 350 million years ago.
Grains of pollen come in all shapes and sizes. The large object in the centre of this image is pumpkin pollen; the tiny speck just below and to the right of it is forget-me-not pollen Picture: MICRONAUT / CATERS
Fungi mushrooms are packed with texture. I have used this image as the texture is very delicate but also very bold at the same time. I like the shape of this image and would I would enjoy incorporating mushrooms or other foods in my art work.