With the DiaPusher plugin you can press with the help of pistons coalblocks to diamonds. It works in every direction and with every minecraft server version :D

Features of version 2.0: new coal states between coal and diamonds

2.1: you can burn char coal to coal

How to use: Set two pistons against on floor, two coal blocks between them. Then power the pistons and you´ll get a diamond. It also works standing, but don´t blockade any pistons, because maybe it wouldn´t work.

over 333 Downloads :D

Example:

press coal into diamonds

More examples :D

text on sign: DiaPusher: coal -> dias

Testet with Craftbukkit 1.7.2 R0.3

Commands, Permissions, and Configurations for V2.0 (Version 1.0: none)

Configuration	Value	Function
CoalStates	`name1//name2//name3`	sets the ingame names for the steps between coal and diamonds - more names = more needed blocks: 2^n
CoalStates-diaBlock	true/false	get at the end diamond block instead of diamond?

With the DiaPusher plugin you can press with the help of pistons coalblocks to diamonds. It works in every direction and with every minecraft server version :D

Features of version 2.0: new coal states between coal and diamonds

2.1: you can burn char coal to coal

over 333 Downloads :D

Commands, Permissions, and Configurations for V2.0 (Version 1.0: none)

Mein Youtubekanal :D (who do not unstand, what that means can search for my earth presentation video :D)