This mod is an add-on/extension of Silent's Gems by SilentChaos512 (http://minecraft.curseforge.com/projects/silents-gems) and you'll need that to play with this mod. This also uses LIT (Little Insignificant Things http://minecraft.curseforge.com/projects/lit-little-insignificant-things) as a library, so make sure you have that installed as well!
(Please note that I am a full time graduate student and teaching assistant and am simultaneously planning a wedding, so if updates are slow, it's because I have had a busy week.)
[NOTE: Note that development of the 1.8 version has been halted and I will focus on the 1.9 version. If there are bugs in the 1.8 version, let me know and I'll fix them, but I will not be adding new content to that version. Thanks for understanding!]
Gem Furnaces

Currently, the mod adds a furnace for each of the 32 basic gems in the game; sticking with the theme of each gem having its own properties, each furnace is slightly different. They are crafted with one Improved Furnace (from LIT) or a Vanilla Furnace and a gemstone above and below it in the crafting grid. (The gemstones must have the same ore dictionary value.)
Furnaces also can store excess fuel so that you don't have to keep filling it up as often. ;-)
This also means that the furnace will only take as much fuel as it needs in order to smelt an item - no more wasting a piece of charcoal to smelt one item!

The properties of the gem furnaces explained:
Furnace Upgrade System (actually a part of LIT)

Each furnace has a different number of upgrades that can be applied to it. You can look up the recipes in JEI; install an upgrade by sneak-right clicking on a furnace that has room for an upgrade. (The chat will tell you whether it has room if you attempt.) There are currently three upgrades, one each for cook speed, fuel efficiency, and fuel capacity. The properties of these upgrades may change in the future.
Note that upgrades will not affect anything that is currently being smelted upon the time of upgrade, but will go into effect on the next item.
Gem Chests

Note that gem chests of either tier will retain their inventory when broken and also when used in a crafting recipe to form an upgraded chest.


Gem Transmutation Device

Tired of having loads of rubies or sapphires laying around but very few of any other type of gem? Have no fear, the power of chaos is here! Using the Gem Transmutation Device (powered by nearby passive/burner chaos pylons/chaos nodes - see Silent's Gems for reference), you can change any type of gem into any other type! There's a catch, though: the process is completely random! (You're using Chaos as fuel...what do you expect?) Upon placing gems into the left-hand side of the gui, the Changer will grab them, one at a time, and use 2000 Chaos Energy and 5 second to transform it into another gem (it won't change it into the same type nor will it convert overworld [light] gems to nether [dark] gems) and move it to the right-hand output slots!
If a target gem is placed in the target slot (you know, the one with a very poorly drawn target), then the Changer won't move the gem from the working area until it is the same type as the target. Since the conversion process is random, this might take a bit of time. Fortunately, the Changer is a little intelligent and keeps track of how many attempts have been made at transmutation. This means you're guaranteed to get the target gem in [at most] 42 attempts! (Grab your towel!) (An upgraded version of this block may eventually rear its ugly head, but until then you'll have to deal with randomness.)

Shinies Bags


Bonus Information
I have a few more features planned and will implement them as I have time! :-)
Of course, if you have suggestions or comments, please leave them below! I'd like to hear what you all think.
You can also follow me on Twitter to see what's going on in my mod development, etc @M4thG33k.
No files available for download.