I have no words as to why this is my favorite crystal. If I had to describe the feeling, it would be love at first sight. Of all my crystals, this one I had instant connection to it. It might be due to the feminine energy that it has. But I love the dark color with the intricate details inside. It's a big size and the polish on it is perfect. So soft to the touch and round. It makes me feel relaxed and like everything will be ok when I hold it in my hands. Best purchase.