This medium Shungite pyramidhas a lot of shine, but also some surface personality, and a semi-oval mark on the bottom, possibly from a previous price tag (in the past). It also has a kind of elevated base.
This medium Shungite pyramidhas a lot of shine, hardly any surface markings, and is solid black. Slightly sharper upward angle than the other medium piece.
This largest Shungite pyramid we have, has a lot of interesting surface.