Larimar

Larimar is sometimes also called the Atlantis Stone because of its ocean-like qualities.
It is a serene crystal that can promote relaxation and calm. It is a popular choice for a “worry stone,” a smoothly polished stone that is held in the hand and rubbed by the thumb as a folk practice for relieving anxiety.
Larimar’s connection with the element of water means that it is a wonderful stone to use for all manner of anxiety related to emotional issues, such as that caused by relationships, social anxiety, guilt, or anxiety caused by “thinking bad thoughts”. 
It helps with communication and makes easier to communicate about issues of both emotion and fear and promotes confidence in speaking about these issues.
It has an emotional healing effect that will assist you in overcoming self-sabotaging behaviour, such as martyr complexes, learned helplessness, or developing a narrative of self-victimization.
It is a wonderful stone for meditation, as its positive effects on communication also include the communication between yourself and the higher powers of the universe.
Larimar will help you develop healthy relationships, both with others and with yourself. It can help you communicate your feelings effectively, recognize your own negative and toxic feelings, and dispel those in a healthy and efficient way.
Larimar can help you differentiate between productive negative emotions and destructive negative emotions, and once you can make that distinction, you can start to let go of the destructive ones.
It is connected with the Throat Chakra.