Stunningly beautiful. Beautiful almost seems like an understatement here. Why did I name it Pterodactyl? Because this marble will make your spirit soar when you see it....and, well, it's the only thing that rhymes with fractal, HA HA. And pterodactyls are AWESOME, just like this marble! Awesome action all the way around as you spin this amazing creation in hand - you will be flat out mesmerized by it, as your spirit soars to unknown heights! Ray NAILED IT here. Signed 'RK 2016'.