also Urban Bramble if you can, try and get to a real physical crystal shop. Try out some of the suggestions in the thread and feel and hold them. Do you feel connected or repelled? Some people are so taken by something in the shop or get an instant headache near one! They are really different for each person, despite their properties on each. It's really what you need! Also the shop owners tend to have amazing experience based on their customers feedback. So try them out and ask in the shop.
if you have a pendulum and / or dowsing rods (the rods were a great idea from Briar Rose in another thread), try them out in the shop. It's the one place it's acceptable to dowse in a shop and see what you need. You can also dowse if you are ordering online.
Just some crystal shopping ideas