Tattoo'd stone

This is for Benchnotes who noted my egg shaped stone beside my laptop yesterday. It was blipped before, but somehow didn't come out as well as I'd hoped. This time I put it under a strong light, and decided that it looks best in mono. To me the marking resembles a tatoo, as if it was a deliberate design. Somehow nature has engineered this. Needless to say, it's my favourite stone.