Prime_235711's More Ore Mod naturally generates ruby ore in the overworld and titanium in the nether.
Titanium ore drops titanium nuggets which can be crafted into:
-Titanium Ingots
-Titanium Blocks
-A Full Set of Titanium Tools
Ruby ore drops rubies which can be crafted into:
-Ruby Blocks
-A Full Set of Ruby Tipped Titanium Tools
Have fun!