Agates

Kentucky Agate

Roland L. McIntosh

2013

The Book of Agates and Other Quartz Gems

Lelande Quick

1963

Achate

Josef Arnoth

1986

Achat

Hans-Joachim Blankenburg

1988

Agates

Roger Pabian

2006

The agates of North America

Hugh N. Leiper

1966

Fairburn agate

Roger Clark

2002

Agate collecting in Britain

Peter Rowland Rodgers

1975