* Rocks are naturally occurring solid materials composed of one or more minerals.
* Minerals are naturally occurring, solid, inorganic substances with a specific chemical composition and crystalline structure.
Amber, on the other hand, is:
* Organic: It originates from the sticky resin secreted by ancient trees, which is a biological substance.
* Not crystalline: While amber can appear solid, it doesn't have the ordered atomic structure of a crystal.
* Not formed through geological processes: Amber forms through the fossilization of resin, which is a biological process, not a geological one.
Therefore, amber is classified as a fossil, specifically a fossilized resin.
