I haven't! but.. I must admit, I would love to try some. I had a mini-reading with them a few times and they seemed to be spot on.. although brief and basic, but It's enough sometimes I think
I always thought they would be good for healers, to help guide where and what a person needs help with when it comes to chakras, emotions, other life situations
I think Doreen Virtue has a deck or two on Crystals. Wonder if anyone else here has. Worth a shot but it's so hard to choose I understand as there are so many decks.
The best oracle deck I had aside from angel and tarot, it was by Sonia Choquette, (hope I spelled her name right) and it was 'messages from your guides' I think. Those are good too if you decide against the crystal ones,
Still i'd say if you are drawn to them, get them if you can , definitely