Encyclopedia of minerals and gemstones 
edited by Michael O'Donoghue 
 - New York  Putnam  1976 
 - 304 p. : col. ill. ; 30 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 296-297. 
<br/><br/><label>ISBN: </label>0399117539 
<br/><br/><label>LCCN: </label>76-001419 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy<br/>Precious stones