I love all crystals however my favourites have to malachite, labradorite and moonstone.
Malachite helps with the aches and pains of fibromyalgia for me although it is nicknamed the chaos bringer so use it with caution, the chaos is needed and for a higher purpose but if unexpected then may take you by surprise!! Labradorite I love because of the colours and the sheen/shimmer from it and Moonstone I find very calming and peaceful, it is one of the stones of the Goddess too.