The first thing - Diamond (But not the original one)

It can give you a diamond every 20 second.

Recipe:

The second thing - Diamond Flower

This flower can spawn in Desert and Mesa biomes. This flower can use to craft diamond.

Here is some screenshot:

The last thing - Diamond Geode

Diamond Geode can spawn in Desert and Mesa biomes. It will spawn in 43 and deeper.

Here is a screenshot:

These is all things in my addon. 

-If this addon have any bugs, you can tell me in command.