There are 3 tiers of tools in the mod. The three tiers are Obsidian, Emerald, and Lava. Hoes and Armor are not yet craftable with these materials.
Obsidian: 15 Damage (7.5 Hearts)
Emerald: 18 Damage (9 Hearts)
Lava: 20 Damage (10 Hearts)
Obsidian: 0.25 seconds
Emerald: 0.1 seconds
Hoes and Armor will be added in later versions.