The Geology and Genesis of Gem Corundum Deposits

By Gaston Giuliani,Daniel Ohnenstetter,Anthony E. Fallick,Lee Groat and Andrew J. Fagan
 
:Access Link
files.php?rid=9


:Abstract

Gem deposits are rare because in general the conditions that promote their formation are unusual and thus worthy of scientific study. Recently,modern geological and analytical techniques have been applied to gem occurrences worldwide,and our models and understanding of their formation are being radically altered. This short course volume looks at gemstones from a geological perspective and reviews our current understanding of diamond,ruby,sapphire,and emerald deposits,but will also examine the lesser known coloured gems.