"Agates have fascinated man for thousands of years and are now one of the worlds most popular gemstones. Perhaps part of this fascination lies in the fact that no two agate nodules are ever exactly alike. The range of their colours, patterns and shape are almost endless and yet all have thought to have been formed by the one natural process. This variety is true of no other gemstone however rare or exclusive it is."
-- from "Scottish Agates" by Nick Crawford and David Anderson


The Agates Collection was created by Roger Pabian. Please read more about Roger.

Blue Chalcedony, Blue Agate
Blue Chalcedony, commonly called Blue Agate, was named Nebraska's state gemstone by legislative action in 1967.


A collection of over 850 images of agates and related information including location of discovery and description.

Searches can be based on location or contributor.

Enter the Collection


A set of terms describe characteristics of agates.

Enter the Glossary


A collection of notes about agates.

Searches can be made by an index of agate name or text within the notes.

Enter the Lexicon


A collection of citations on Agates.

Searches can be made by an index, suggested text or by topic.

Enter the Bibliography


Matt Joeckel

Matt Joeckel

State Geologist and Associate Director of the Conservation and Survey Division

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This data is collected, administered, and provided by the Conservation and Survey Division.