PLATE XII. 



t. 



10. 



7. 



11. 



1. Emerald, crystal in calcite (Col)|Q^c^.i^.j^^Be0||(|^ f^l^|t[{j;i^-scbist (Salzburg). 3. Emerald, 

 cut. 4. Beryl (golden beiyl), oTja^L.-b. Aquamarin(^.cr^pfl:d (Liberia). 6, 7. Aquamarine, cat. 

 8. Chrysoberyl (Alexandrite), erystel (Unia). 9a The same, cut-stone by day-light. 9b. The same, 

 cutrgtgflg h£-flliBimflHL IP' Chrysoberyl, crystal (Bnail). 11. Chrysoberyl (Cymophane), out. 



