Belemnite

Fossil

Also called Thunderbolt, Devil's finger, and Belemnitella

About it

Bullet-shaped guards of radiating calcite from extinct squid-like animals, often honey-coloured and translucent. Common in Jurassic and Cretaceous rocks of England, Germany, and Denmark; Delaware's state fossil is a belemnite.

Type
Fossil (mollusc)
Group
Cephalopod (mollusc)
Colours
honey, amber, brown, grey, cream
Transparency
translucent, opaque
Periods
Jurassic, Cretaceous

Typical values: real specimens vary. For more, see mindat.org.