Moss Agate slab

Moss agate isn't actually moss or technically an agate. It is a variety of chalcedony, belonging to the quartz family.  The spreading moss-like dendritic inclusions you see in moss agate are mostly oxides of manganese or iron.

Slab A:  5.75" x 3.5"

Slab B:  5.75" x 3.5"

Slab C:  5.25" x 3"

Slab D: 4" x 4"