Jedi are said to be drawn to each individual Kyber Crystal, which forms a relationship with that particular Jedi.
Accoridng to the Star Wars Wiki, The Kyber crystals are rare, Force-attuned crystals that grew in nature and were found on scattered planets across the galaxy.
Is Jyn Erso related to an existing Jedi or Sith?
So, are we looking at a big Star Wars Rebels and Star Wars: Clone Wars crossover here?