Basil Anderson & James Payne <br/><br/>
The Spectroscope and gemmology 

 - Gemstone Press, Woodstock  c1998 
 - 269p 
<br/><br/><label>ISBN: </label>0-943763-18-5 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Polytechnic - Jewellery
<br/><br/><label>Dewey Class. No.: </label>553.8 And/Pay