Practical Gemmology by Robert Webster,undated,but I would guess to
1940s or thereabouts,VGC, 180 pages.

Superb old book,genuine craft manual,as opposed to a hobbyists book.
Extremely comprehensive,covers styles of cutting,various gems and
minerals,testing for genuine stones,colour,testing,as well as shorter
sections on jet,coral amber,pearls etc.

http://cgi.ebay.co.uk/ws/eBayISAPI.d...e=STRK:MESE:IT