Diamond is used to cut glass, since it is harder than glass.
There could be several rocks used in the making of glass, but the main constituent material used in making glass is quartz. The rock which is used most for supplying the quartz used in glass making is sandstone.
Maybe pieces of old,broken glass
Maybe pieces of old,broken glass
Usually sandstone is used to supply quartz for making glass.
Usually sandstone is used to supply quartz for making glass.
fibre glass.
this rock is used for smelting and making glass
is used for making windows/glass
Yes. Most glass begins as silica sand.
lots
steel and glass
sand