財）石の博物館TM

Kiseki Museum

Collection Photo Album

Platyceras (Rainbow-colored ammonite)

Platyceras (Rainbow-colored ammonite)
Lethbridge, Alberta, Canada
Would you like to know why the ammonite shell in the picture is shining like rainbow?
Alternate layer of aragonite and conchiolin inside the shell-wall inflect and reflect the light. This causes the shell shine in rainbow color.
In some countries accessories are made with these Platyceras.

Back