File:Alaunkristall Wachstum 02.jpgthis work, hereby publish it under the following license: English An alum crystal grown overnight: a total of 15,3 g German Über Nacht: 15,3 Gramm; 1,35
File:Alaunkristall.jpgthis work, hereby publish it under the following license: English An alum crystal with 2,8 cm in "diameter" and 6,6 g of mass German Ein oktaedrischer