To apply a fairly abstract curiosity to the contents of your pocket, it is closely related to Gorilla Glass[tm]. Gorilla Glass is chemically treated "tempering"

To apply a fairly abstract curiosity to the contents of your pocket, it is closely related to Gorilla Glass[tm]. Gorilla Glass is chemically treated "tempering" rather than heat treated. Ref: http://en.wikipedia.org/wiki/Gorilla_Glass#Manufacture http://en.wikipedia.org/wiki/Gorilla_Glass#Manufacture http://en.wikipedia.org/wiki/Toughened_glass#History http://en.wikipedia.org/wiki/Toughened_glass#History