This is a top quality Hypersthene Palm Stone. Unfortunately the rounded shape is showing reflections and not the flashes! The photo of the base shows the flashes that also show on the top!
And which hopefully you can see in the photos the stunning shimmer of silver in among the black. Enjoy a video of this delightful but much under rated crystal. This stone has saved me from staying in my confused mind when I could not find the flow in life and the surrender.