A collection of factory Amber

A collection of fossil Amber from 3 different places, 1. The golden pieces (9 of them in the background are Copal from Colombia. Is factory Pleistocene age.
2. The 6 polished pieces are from the Baltic Sea and is Tertiary age.
3. The small matrix piece is from South
Dakota, and is Cretaceous age.
The Baltic Amber is polished and can be used in jewelry making, some of the Columbian pieces also are and some have bugs, mostly termites in them