The Basic Stuff:
Ruby replaces Diamond
Emerald replaces Iron, and Iron golems are now emerald.
Sapphire replaces emerald ore / block as well as chain armor.
Amethyst replaces gold
Some mobs remodeled
A .lang file that makes these items named like they should (Emerald Pickaxe, etc.)
Iron replaces Leather and cows drop iron.
Green Obsidian and nether portal.
Other slight modifications

Important Information (Please Read):
This is mainly for normal playthroughs and is not recommended for online play.
Using this pack outside of 1.8-1.10 will cause many issues such as:
Glitchy horse armor.
.lang file does not work.
The .lang file is English (US) only. Will not be working on other languages.
Wooden / Stone tools are not modified as it would be unrealistic for them to turn to iron and sapphire (comment if you want a PVP pack that fully replaces all tools / armor).
If you notice an item not remodeled like it should be (example: emerald door is still iron) please comment so I can fix it!
Enjoy the pack! Please give credit if you use this on a site or video.