Verena Pagel <br/><br/>
Diamond grading ABC: handbook for diamond grading 

 - 11th ed,rev & enl 
 - Rubin & Son bvba, Antwerpen  c1993 
 - 308p 
<br/><br/><label>ISBN: </label>3-9800434-0-1 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Polytechnic - Jewellery
<br/><br/><label>Dewey Class. No.: </label>553.82 Pag