I found this rock on Marrowstone Island, last week. All of the rocks are bright in the sun, especially right after the tide washes over them, but this one stands out.

The surface has layers and layers of mica. Apparently there are 57 different mica minerals, here, so I am not enough of an expert to know which it is. I can see the layers of flakes of mica. This is a beautiful rock.

For the Ragtag Daily Prompt: grasp.