Field guide
Rocks
Agates, coral rock and odd stones
7 entries in the Florida guide
Beach-worn Brick
Fired clay
Check local rules
Chert Pebble
Microcrystalline quartz
Check local rules
Coquina Rock
Cemented shell limestone
Check local rules
Coral Rubble
Dead scleractinian skeleton
Protected, do not collect
Limestone Cobble
Marine limestone
Check local rules
Pumice
Volcanic glass foam
Quartz Pebble
Silicon dioxide