Amazonite

Will be Chosen intuitively for you - they range from 30 to 45g and roughly 4cm wide. 
All same price. 

Called the Stone of Courage and the Stone of Truth, Amazonite empowers one to search the self and discover one's own truths and integrity, and to move beyond fear of judgment or confrontation with others to live in alignment with those beliefs and values. It provides harmony and balance. Connected to the heart Chakra.