Sodalite is one of my favourites. It has a beautiful blue colour and can be slightly mottled in its appearance.  Quite often the more you look at this stone the deeper you can look in to it and see an array of different colour blues and textures.  
The crystal itself is known for promoting logic and intuition and opens spiritual perception.
Each stone is approximately 5-15g in weight. Size and shape may vary from the picture shown.