Can't be half of anything. Anyways, the gems are very nice, but they aren't all just one element. There are groups of gems for each element at the color's saturation. Fairies can fly and change sizes. The hunters have a contraption where you put the blood of a fairy inside a tube for some time, and it'll tell you its element. You can also use fairy gems to imitate some of their powers except for flying. As a human, fairies nor hunters target you, and you can fake being a fairy on YouTube.