This is the SMAS Mod, aka "some more added stuff" mod.
The mod includes:
Emerald Armor and Tools
Obsidian Armor and Tools
-obsidian armor is pretty strong, but applies slowness.
Obsidian Ingot: made by smelting obsidian, produces 8
Silver ingot: found in caves, rare like diamond
Silver Armor and Tools
Netheron Ingot: found in the nether, rare
Netheron Armor and Tools
-full netheron armor gives you fire resistance
The diamond and emerald double axe and hammer
Dragegg armor and tools, very powerful(around 29 dmg) stuff made from smelting dragon egg. Makes ingots to craft the stuff.
Recipes video:

https://www.youtube.com/watch?v=f9Gr7p0HnBE

Old versions can be found now in the forum post.
Update:

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200+ Downloads!
Thank you so much! Really appreciate it.