This is ShyGuy_Deku's and my (GameIdiot's) attempt on the classical joke of dirt to diamonds.
Crafting dirt to compressed dirt, and so forth and so on, will, sooner or later, grant you a diamond.

Now, most of the recipes consist of just filling a crafting table with dirt or stone.
Some of the recipes have special patterns though.
All compressed blocks can be reverse crafted into their ingredients.
Also, avoid placing and breaking the compressed blocks, they might break, therefore stealing your time, if you do.

Complete crafting chain:

Dirt ---> Compressed Dirt ---> Double Compressed Dirt ---> Triple Compressed Dirt ---> Gravel

Gravel ---> Compressed Gravel ---> Double Compressed Gravel ---> Triple Compressed Gravel

Compressed-/Double Compressed-/ Triple Compressed Dirt x2 + Compressed-/Double Compressed-/Triple Compressed Gravel x2 ---> Compressed-/Double Compressed-/ Triple Compressed Coarse Dirt ---> Cobblestone

Cobblestone ---> Compressed Cobblestone ---> Double Compressed Cobblestone ---> Triple Compressed Cobblestone ---> Stone

/
Compressed-/Double Compressed-/Triple Compressed Cobblestone -smelting-> Compressed-/Double Compressed-/Triple Compressed Stone

Stone ---> Compressed Stone ---> Double Compressed Stone ---> Triple Compressed Stone ---> Block of Coal

Block of Coal ---> Compressed Coal ---> Double Compressed Coal ---> Triple Compressed Coal ---> Diamond Dust Speck

Diamond Dust Speck ---> Diamond Dust

Diamond Dust -smelting-> Diamond Shard

Diamond Shard x8 + Slime Ball ---> Diamond

By the way, I think Dwayne hid in there somewhere.

GameIdiot's Dirt to Diamond