Porcellio Scaber "Calico" Isopod Select...:10ct Typical stalactitic chalcedony is like

Typical stalactitic chalcedony is like a small cave lined with stalactites

but key to the definition is that the patterns look almost like images

Approx dimensions: 4

and I did detect faint phosphorescence for several seconds after exposure to 365nm UV light

This material has some slight translucency to the blue calcite

Porcellio Scaber "Calico" Isopod Select...:10ct Typical stalactitic chalcedony is likePorcellio isopods often display sexual dimorphism. In the Calico variety of Porcellio scaber, the females are an orangish brown color speckled with gray, while the males are a simple gray. Calicos can be very well camouflaged on cork. I find this variety to be quite friendly though skittish. They are speedy and bolt when disturbed, but when they are calm you can hand feed them. If I hold a small piece of food in front of one they will reach up to grab