Mossy Cobblestone

Moss Stone is a block that was first introduced in Survival Test and remains in all later versions of the game. It looks like Cobblestone but with moss growing on it. Like Cobblestone and Netherrack, on the upper left, there is an 'L' that points to the north and east which can be used for navigation because these blocks always orient themselves in the same direction when placed. However, the markings on them may vary if you use a texture pack. Its primary use is for construction - often used in combination with normal Cobblestone for decoration purposes, such as to make buildings look older or to make Nether portals more eerie. Moss Stone is one of the most desirable materials in the game.

Moss Stone uses a pattern similar to that of Netherrack, but with different color schemes, Moss Stone being gray with green moss, and Netherrack being bright-red with dark-red areas.

Natural occurrence
Moss Stone can be found naturally in Dungeons, Jungle temples and in the form of scattered "boulders" in Mega Taiga biome.

Trivia

 * It is interesting to note that while in Beta 1.7, Cobblestone patterning changed, Moss Stone's texture remained until Beta 1.8. Also, in Beta 1.7, not only did the contrast change, the top and bottom halves of the texture were swapped. This did not happen to the Moss Stone texture; only the contrast was changed before adding moss.
 * If using English (UK) or Canadian English (CA) language, Moss Stone is called Mossy Cobblestone.
 * In Minecraft: Pocket Edition, Moss Stone is in Creative mode, but is unobtainable in Survival mode legitimately.
 * Villages were once a source of Moss stone, however this since has been removed.

Gallery
Bemooster Pflasterstein Piedra musgosa Pierre moussue Pietrisco Muschioso Mohás kő Moss Stone/ko Mossig steen Bruk z mchem Замшелый булыжник 苔石