Aquamarine evokes the purity of crystalline waters, and the exhilaration and relaxation of the sea... The name Aquamarine comes from the Latin aqua marinus, meaning "water of the sea," and refers to its sparkling ocean-like color. 
Aquamarine is a stone of courage.  Its calming energies reduce stress and quiet the mind.  Aquamarine has an affinity with sensitive people.  It can invoke tolerance of others and overcomes judgmentalism, giving support to those overwhelmed by responsibility.  Clarifies perception, sharpens the intellect and clears confusion.  Useful for closure on all levels.  Promotes self-expression.  Soothes fears and increases sensitivity.  Sharpens intuition and opens clairvoyance.  Wonderful for meditation.  Shields the aura and aligns the chakras.  Highly protective during pregnancy and childbirth.
The charm is made of filled 14k gold, tarnish resistant but remove it before showering or bathing.