Moss Agate sphere

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.

Sphere 1: 70mm

Sphere 2: 60mm

Sphere 3: 61mm

Sphere 4: 59mm