This is a lovely Madagascar rough rose quartz crystal.
Weight: 449g approximately 
Rose Quartz is the stone of universal love.  
It's said it restores trust and harmony in relationships, encouraging unconditional love.  
Rose Quartz is said purifies and opens the heart at all levels to promote love, self-love, friendship, deep inner healing and feelings of peace., Calming and reassuring, it helps to comfort in times of grief.  
Rose Quartz dispels negativity and protects against environmental pollution, replacing it with loving vibes.  It encourages self forgiveness and acceptance invoking self trust and self worth.
 
Please note that we make no medical claims just years of knowledge of crystals and their properties