The Rockhound dictionary
1,043 minerals, gem varieties, rocks, fossils, meteorites, organic gems, and lapidary materials, with how to tell them apart. Shared by everyone who uses Rockhound: pick one of these names when you add a specimen, and its properties fill themselves in.
96 entries fit.
A
- AmmoniteFossil
- AnnulariaFossil
- ArchaeocyathidFossil
- ArchimedesFossil
- AsaphusFossil
- AtrypaFossil
B
- BaculitesFossil
- BelemniteFossil
- BivalveFossil
- BlastoidFossil
- BrachiopodFossil
- Brittle starFossil
- BryozoanFossil
- BurrowFossil
C
- CalamitesFossil
- CalymeneFossil
- Cave bearFossil
- CeratitesFossil
- ChesapectenFossil
- CleonicerasFossil
- ConodontFossil
- CoproliteFossil
- CrinoidFossil
D
- DactyliocerasFossil
- DiatomFossil
- Dinosaur boneFossil
- Dinosaur eggshellFossil
- Dinosaur toothFossil
- Dinosaur trackFossil
E
- EchinoidFossil
- Ediacaran fossilsFossil
- ElrathiaFossil
- EurypteridFossil
- ExogyraFossil
F
- FavositesFossil
- ForaminiferaFossil
- Fossil crabFossil
- Fossil fernFossil
- Fossil fishFossil
- Fossil horse toothFossil
- Fossil insectFossil
- Fossil insect in amber ⚠️Fossil · H 2–2.5
- Fossil leaf ⚠️Fossil
- Fossil pineconeFossil
- Fossil whale boneFossil
- FusulinidFossil
G
- GastropodFossil
- Ginkgo leafFossil
- GlossopterisFossil
- GoniatiteFossil
- GraptoliteFossil
- GryphaeaFossil
H
- HalysitesFossil
- Horn coralFossil
- Horseshoe crabFossil
I
- IchthyosaurFossil
- InoceramusFossil
- IsotelusFossil
K
- KnightiaFossil
L
- LepidodendronFossil
M
- Mammoth toothFossil
- Mastodon toothFossil
- Mazon Creek noduleFossil
- MetasequoiaFossil
- MosasaurFossil
- MucrospiriferFossil
N
- NautiloidFossil
- NeuropterisFossil
- NummuliteFossil
O
- OlenellusFossil
- OreodontFossil
- OrthocerasFossil
- Otodus megalodonFossil
P
- ParadoxidesFossil
- PecopterisFossil
- Petoskey stoneFossil
- Petrified palm woodFossil · H 6.5–7
- Petrified woodFossil · H 6.5–7
- PhacopsFossil
- PlesiosaurFossil
- ProductidFossil
- PterosaurFossil
- Pyritized ammonite ⚠️Fossil
S
- Sand dollarFossil
- ScaphitesFossil
- Shark toothFossil
- SigillariaFossil
- Spinosaurus toothFossil
- SpiriferFossil
- SpongeFossil
- StarfishFossil
- StigmariaFossil
- StromatoliteFossil
T
- Trace fossilFossil
- TrilobiteFossil
- TurritellaFossil
The dictionary's figures are typical ones, and specimens vary. ⚠️ marks entries with a caution (toxic, radioactive, or easily damaged): open one to see what to do.