stained glass | The Glass Menagerie | Through the Looking-Glass | glass | Stained glass | Ira Glass | Corning Museum of Glass | Google Glass | Volcanic ash | Stephen Glass | Grandma's Reading Glass | Glass Shadows | The Glass Passenger | Keith Glass | glass cockpit | Carter Glass | Volcanic Legacy Scenic Byway | Tiffany glass | The Glass Key | The Glass Bottom Boat | The Glass Bead Game | Stuart Robert Glass | Steuben Glass Works | Stephen Glass (reporter) | Like Eating Glass | Glass transition | Glass Candy | Doyle Glass | Charles Glass | William Morris (glass artist) |
Volcanic ashes and pumices largely composed of volcanic glass are commonly used, as are deposits in which the volcanic glass has been altered to zeolites by interaction with alkaline waters.
The prehistoric Coso inhabitants exported volcanic glass (Coso obsidian) and this highly valued toolstone has been found as far distant as the Channel Islands of California.