Opals and Sapphires
How to Work, Mine, Class, Cut, Polish, and Sell Them
First edition. Hardback, bound in the original brown cloth with gilt titling to spine. 22.5 × 14.5cm, 231pp.
This is the fourth of Ion L Idriess' "How to" books on mining and prospecting, the first was commissioned by the Australian government to open up the outback during the depression. This book covers everything to do with opals and sapphires including prospecting for opals, shaft-sinking, fossicking, sapphire localities etc, and is illustrated in colour and black and white.
A good plus copy, with a few small marks to the covers but the pages are clean and the binding firm.