They were made of glass that did not crack, researchers have recreated it
cinderella danced for hours at the prince
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/stuff-cinderellas-slippers
[2] http://admin.indiaenvironmentportal.org.in/category/author/vibha-varshney
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us