Locality: Indonesia Strata Layer: Oligocene Size (mm): 77x60x20 Nice large piece of rough Sumatran amber. Insects are known in Indonesian amber, but not common due to the volcanic formation. These pieces are excellent specimens with a nice crust. Could potentially be polished, or leave as a specimen and backlight to see through into the amber. My amber is obtained from reliable sources and come from localities around the world. Every piece is guaranteed genuine.