Blue chert is a type of microcrystalline silica rock that is typically blue or gray in color. It is commonly found in sedimentary rock formations and has been used for various purposes throughout history, including as a building material, tool-making material, and as a decorative stone.
Blue chert is believed to have calming and soothing properties that can help to reduce stress and anxiety. It is also said to promote feelings of peace and tranquility, making it a useful crystal for meditation and spiritual work. Blue chert is associated with the Throat Chakra, and is believed to help improve communication skills and aid in self-expression.
In terms of zodiac signs, blue chert is associated with the astrological sign of Aquarius. It is believed to resonate with the intellectual and independent nature of this sign, and can help to enhance mental clarity and creativity. Blue chert is also associated with the element of air, which is connected to the intellect and communication.