I have to admit, I'm really hoping it's fluorite. I read that it's a stone for Capricorns and Pisces, which is what my mom and I are. I read this AFTER buying it, so we were like WHOA. Plus I like the properties of fluorite. Thanks Thunderwolf!
Yay! I'm so happy, thanks everyone! I slept with it under my pillow last night to help me keep a clear head amidst some of my minor homesickness. It worked well and I feel mostly clearheaded this morning.