Sinkankas, John, <br/><br/>
Gemstone and mineral data book :  A compilation of data, recipes, formulas and instructions for the mineralogist, gemologist, lapidary, jeweler, craftsman and collector. 

 - 352 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gemas<br/>Piedras preciosas
<br/><br/><label>LC Class. No.: </label>QE392  / S54