Glass

Glass is a block that first appeared in Creative version 0.0.18a_02. It has a almost completely transparant texture put on all six sides of the block. Glass isn't generated anywhere on a natural map.

Glass is available for use in creative mode. It is often used for windows and other transparant parts of structures.

In the Survival mode test, glass blocks could be broken very quickly and would drop a glass block to pick up. The only way to obtain glass blocks was to place them on the map before the level was loaded in the Survival test client. In Indev, Infdev and Alpha, a block of glass could be crafted by smelting a block of Sand. When broken, the glass block cannot be reobtained, so they must be placed wisely.

Trivia

 * Glass' texture is commonly changed to have the pixels in the middle of the block removed to provide a clearer view.