rockspecimen

noun
UK /ˈrɒk ˌspesɪmən/
US /ˈrɑːk ˌspesɪmən/

A rock specimen is a piece of rock that someone keeps to look at and study.

The museum has a shiny rock specimen from a volcano.


OTHER MEANINGS

2. A small rock kept by a collector because it is interesting or pretty.

She added a purple rock specimen to her shelf.

3. A rock taken from a place so scientists can learn what it is made of.

The team brought back a rock specimen from the mountain.

4. A piece of rock used in a test or experiment.

The lab tested the rock specimen to find iron inside.