I bought one of these for myself as a birthday treat last spring, and now I'm buying more for Xmas presents for friends. I love the smoothness of the polish and the deepness of the black color and shine as described to me as a blind person are all awesome. This is a great piece for grounding, meditating and doing shadow work and their energy is very protective and shielding. Very reasonably priced as well, I have bought other pieces like this one for twice or three times the price.