Aye, you want to prevent yourself from referring to Djent as a "genre" or even a sub-genre of metal, as a lot of people make that fatal mistake, heh. "Djent" is just the sound of a particular guitar tone associated with newer prog / tech / math metal bands like Periphery, Tesseract, Meshuggah, Chimp Spanner and Animals as Leaders.
I really hope it doesn't turn into a name for a genre itself, as I have heard such a diverse array of bands using that sound and from one end of the spectrum to the other, they are all so drastically different from each other that using that term to describe them would get really confusing. I prefer to use the term "prog metal in the vein of Periphery / Meshuggah / Chimp Spanner" (delete as appropriate)
YouTube any of the above bands, or type Djent into Last.FM to get a good idea of the kind of bands that use this sound. I for one absolutely LOVE it, it's just such a meaty, organic kind of tone....which is strange as a lot of these bands use amp modelers to achieve it, heh. A lot of factors go into creating that ultimate Djent tone, I think. Like the construction of the guitars, the woods and the scale length. If you can get the guitar to do most of the work for you in those areas, then dialling in a decent tone on the amp and actually making the sound becomes a lot easier.
Our very own Nolly would be a good person to advise on how to get a good Djent sound, he is very much into the scene and his own band Red Seas Fire use it really, really well!