Read, Peter G. <br/><br/>
Dictionary of gemmology / 
P.G. Read. 
 - 2nd ed. 
 - London ;  Boston :  Butterworth Scientific,  1988. 
 - 266 p. :  ill. 
<br/><br/><label>ISBN: </label>0408029250 
<br/><br/><label>LCCN: </label>90011049 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precious stones--Dictionaries.