Are you a grifter? This gem levelling tool is pretty handy
There is just something about doing Greater Rifts in Diablo that puts my mind at ease. The rush to kill monsters as quickly as possible without worrying about picking up loot or opening every chest and urn offers a pretty different pace and rhythm from my normal stance of killing everything and collecting large quantities of loot for no other purpose than melting it down into little crafting reagents.
While some people have the feel of what level grift is needed to level which rank gem, I find I am playing so many games that I don’t really have the time to memories which level will give what chance of an upgrade. This is made worse by the chances being hidden until you choose to upgrade gems rather than your rift keystone, meaning sometimes you might end your rift spree one level lower than you should have, if you really wanted to upgrade that legendary gem.
Luckily jerbookins has made this awesome Legendary Gem Calculator, which tells you what effect a gem has at a certain level, as well as the chance you would have to upgrade it on a certain grift. It also tells you how many trial waves you need to complete to start on that grift level, which can save a lot of grinding time, if all you are aiming for is improving your gems.
Pretty handy for those of us that dislike remembering lists. Time to get a few more levels on my non-seasonal characters while I wait for season 3 on April 10.