Ritchie Carson I A <br/><br/>
Stones to gems /  
by Carson I. A. Ritchie 
 - London :   Lapidary Publications,  1973. 
 - 71 p. :   ill. (some col.) ;    21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gem cutting
<br/><br/><label>LC Class. No.: </label>TS752.5