Sodalite leaf
Sodalite name comes from the high sodium content in these crystals.
Sodalite crystals bring order & calmness to the mind. It encourages rational thought, objectivity, truth and intuition.  It is also helpful for balancing the throat chakra.
Chakra:   Throat
Colours:   Predominantly blue
 
The leaf is 14cm long, 6.5cmwide, approx 1.8cm high.   It can hold 5 medium tumblestones as per the second picture.