Using blue stones, especially when you are under stress, is said to surround you with calming, soothing energies to relieve stress and calm the mind. They can be used to reopen the energetic flow in areas that are blocked, encouraging you to relax, open up communication and find inner peace.

Blue Coral soothes and quiets turbulent emotions. It reminds us to breathe deeply and to step back and look at the situation logically and from a neutral mind. It quiets the emotions and brings peace within yourself.
 
Aquamarine has the power to wash away attachments and is a great stone to help you in letting go. It helps in calming the environment and eases communicating with others. It has a cooling and calm energy that keeps a relaxed, but alert, state of mind.
 
Angelite helps in bringing peace. It is also known as one of the best crystals for calming anxiety. It helps to quiet the mind so that you can breathe a little deeper and feel more like yourself.
 
Celestite is to reach for in times of stress, sadness and anxiety to bring you back to a peaceful state. It can also be your saving grace in times when you cannot sleep as it channels their energy from the highest realms of consciousness, filling your space with high vibes and soothing tranquillity.