Aragonite
Brown "Sputnik" form
Aragonite is the mineral normally found in pearls. It is polymorphous (same chemical formula but different crystal structure) with calcite and vaterite, and, with geologic time, probably inverts to calcite even under normal conditions. Aragonite is an important element in the shells and tests of many marine invertebrates. These animals can secrete the mineral from waters that would ordinarily yield only calcite; they do so by physiological mechanisms that are not fully understood.
Aragonite Cluster
Aragonite is believed to be a wonderful grounding stone. Found in abundance it is said to be attuned to the earth thereby encouraging conservation and recycling. It has the ability to transform geopathic stress and can clear blocked lay lines at a distance.
Because it can center and ground physical energies, it is useful in times of stress.
Aragonite helps to teach patience and acceptance. It helps to overcome oversensitivity in some people.
Brown Aragonite Tumbled Stone
This is a great stone for people who are pushing themselves to hard and reminds them to delegate.
Aragonite also helps with concentration and focusing on current situations and projects. It aids in bringing flexibility and tolerance.
With it's calming and centering vibrations it's great to use in preparation for meditation by bringing our own vibrations up higher. 
They can assist in maintaining calm in the middle of difficult situations and releasing subconsciously held emotions from past emotional wounds. These clusters are wonderful tools for releasing pain and fear.
They can assist in maintaining calm in the middle of difficult situations and releasing subconsciously held emotions from past emotional wounds. These clusters are wonderful tools for releasing pain and fear. 
Aragonite clusters assist in emotional growth and self-healing work. Aids in letting go of emotional drama or ego.
Key Words:
Calm in the middle of difficulty
Releasing past emotional wounds
Meditation Preparation
Help for self-healing
Grounding stone
Helps with concentration
Source Credit:
Britannica
