Schumann, Walter <br/><br/>
Gemstones of the world 
Walter Schumann 
 - 4th ed 
 - New Delhi  Sterling Publishing  1997 
 - 271 p. : ill. (some col.) ; 20 cm 
<br/><br/> Includes bibliographical references (p. 266) and index 
<br/><br/><label>ISBN: </label>9781402768293 
<br/><br/><label>ISSN: </label>97000380 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precious stones
<br/><br/><label>Dewey Class. No.: </label>553.8 SCH