Fossil resins

thumb|An ant inside Baltic amber thumb|right|Unpolished amber stones

thumb|Copal from Madagascar with [[spiders, termites, ants, elateridae, hymenoptera, cockroach and a flower]] thumb|A sample of copal containing a few termites

species of plant

fossilised resin extracted

Rumanite is a rare variety of fossilized tree resin (amber), known for its deep reddish to brownish hues. It is found exclusively in Romania, particularly in the sandstone deposits of the Buzău River system near the village of Colți in Buzău County.