Books by O'Donoghue, Michael.
Synthetic, imitation, and treated gemstones
An illustrated guide to rocks
An illustrated guide to rocks & minerals
The literature of mineralogy
The literature of mineralogy
The literature ofgemstones
The literature ofgemstones
A guide to man-made gemstones
Synthetic gem materials
Synthetic gem materials
Synthetic gems, the case for c
Synthetic gems, the case for caution