Description
Cally Oldershaw is a gemologist and science educator. She is the author of several very widely held books about gems. Oldershaw is Liaison Officer for the Geological Society of London and an examiner for the Gemmological Association of Great Britain.
Last Changes
2015/05/28
Address replaced: Available to members only
2015/05/28
Address Removed: Available to members only
2015/05/06
Address Removed: Available to members only