I would say the long piece is definitely a clear quartz, one end is usually pointed and the other ragged from when it was separated from the cluster. Alternatively, crystals are used for healing, different colours for different reasons and there are some good books, eg The Crystal Bible with pictures and uses for heaps.
I found a small amethist quartz geode at Nundle when we went with the group, (like a rock opened up with crystals inside), only the size of a 5c though and mislaid it so will be looking there again next time for others.