Encyclopedia
234 rocks, minerals, gems and fossils, each with its photographs, how to tell it apart, and what it has meant to people.
Often opened
AmethystMinerals
ObsidianIgneous rocks
Rose quartzGemstones
TurquoiseGemstones
MoonstoneGemstones
OpalGemstones
234 specimens6 groups15 meanings
Stone of the dayEudialyteLove · SpiritEudialyte is a complex silicate that can give alkaline rocks streaks and masses of rose red. It belongs to a group of similar minerals, so a red specimen photograph may need a broader group label.Read about itkevinzim · CC BY 2.0By group
By occasion
A birthday, an anniversary
The stones that lists and traditions have attached to a month or a year of marriage.
Birthstones of the month
By meaning
What people have asked stones to stand for
Each word gathers the stones whose folklore records it; the stories are in the articles.
The collection
Sedimentary rocks
BrecciaJames St. John · CC BY 2.0
ChalkJames St. John · CC BY 2.0
ChertJames St. John · CC BY 2.0
CoalJames St. John · CC BY 2.0
ConglomerateJames St. John · CC BY 2.0
CoquinaJames St. John · CC BY 2.0
LimestoneJames St. John · CC BY 2.0
SandstoneJames St. John · CC BY 2.0
ShaleJames St. John · CC BY 2.0
SiltstoneJames St. John · CC BY 2.0
TravertineJames St. John · CC BY 2.0