Whether you choose to stay or not Rachael, hopefully you see these two warnings and heed their advice.
Bourgalt is a fraud, and a dangerous one. He claims to have Algonquian ancestry, but what he teaches are false claims from a very dangerous imposter and outright cult leader Diane Fishel, who calls herself Dyani Yawahoo.
http://www.newagefraud.org/smf/index.php?topic=61.msg144#msg144Fishel is not Cherokee. Some accounts says she is Jewish, and she basically passes off a cult version of Buddhism as Cherokee to those who don't know any better. I'm not exaggerating when I call her followers a cult. We have reports of people being pressured to remain against their will, and of the followers being told to revere her son as a living god.
Among the lies Bourgalt spreads, likely coming from Fishel, are claims about Cherokees and crystal healing.
Most tribes don't have any beliefs about crystals. For those that do, many emphasize they can be both powerful and dangerous. It's not something that should be tried casually by a novice, just like you wouldn't want someone casually setting themselves up as a doctor. And any type of healing is not something one should try out of curiosity.
If you want to learn about your heritage, the best place to start is history books. Or the language.