17 



225. QUAKTZ SAND. 



226. PKECIOUS OPAL. 



227. 



>? 



228. 



229. FIEE OPAL. 



230. COMMON OPAL. 



231. SEMI-OPAL. 



^m &5 



232. 



?? 



233. 



)) 



234. CACHOLONG. 



t 5 &5 



235. WOOD OPAL. 



236. 



^> 



237. HYALITE. 



fi 

 238. 



7?a?/, JsZe o/" Wight. 



Hungary. 



Queensland. 



m 



SchemnitZj JJungary. 



^ ^ m 



Maryland. 



* * 



Quegstein, Siebengebirge. 



Quegstein, Siebengebirge. 

 Huttenberg, Carinthia. 



m iiii m 



Calfornia. 

 California. 

 France. 



Auvergne, France. 



II M 



