Garnierite is a green-colored crystal that is found in nickel-bearing environments. It gets its name from the French mineralogist Alexis Garnier, who first described it in 1881.
Garnierite can vary in color from light green to dark green, and it often has a mottled or speckled appearance. The crystal is relatively soft, with a Mohs hardness of only 3-4.5. Garnierite is sometimes used as a gemstone, but it is not as popular as other green stones such as emeralds or jade.
In crystal healing, Garnierite is said to promote communication and self-expression. It is also believed to encourage people to be more positive and optimistic.