Elementals Gems Mod

This mod adds gems that each 
personify the 5 elements (Fire, Water, Earth, Air and Spirit) as well as
 other things (Dark, Light, Blood, Lightning, etc ...)! 

This mod will also add things that do not necessarily have a link with the elements or very little link, but that we would like to have in Minecraft (for example, the manufacturing recipe for horse armor).
( Finally, after reflection, I decided this: the next update will be 0.2.0, ie we will leave the "beta of Fire" to start the "beta of Water". Do not worry: other things concerning the Fire will be added, but only after adding the Spirit, so just before the official version: 1.0.0! )