Noble Shungite is the rarer form of shungite. It is the one that is said to have the highest levels of energy and minerals. And given their carbon dating of it, it seems that life was one Earth longer than originally thought. They have a much higher fullerenes content than Petrovsky or the standard tumbles and pyramids. It is geologically very interesting to collectors.
I love that this crystals does more than build the aura against the drain of Wi-Fi and similar technology. It brings light to dark times in your life and energizes your body, mind, and spirit. I need to try it out to see if it soothes tired eyes. As this is the highest grade, a smaller piece is much more effective than a tumble 3 or 4x its size.
You can read the Healing tab to learn more about healing properties and geology is on Geological tab.
I have not seen any supplier with these as polished shapes as they are friable. Dimensions are for $30. The photo of 2 crystals are when we had $29 budget size. The group of 4 show the other 4 price ranges.
Note that noble shungite can blacken onto your skin so I would not wear on you with pale coloured clothes.