Actinolite is an amphibole silicate mineral. Some forms of actinolite are used as gemstones. One is nephrite, one of the two types of jade. Another gem variety is the chatoyant form known as cat's-eye actinolite.
Actinolite is an amphibole silicate mineral. Some forms of actinolite are used as gemstones. One is nephrite, one of the two types of jade. Another gem variety is the chatoyant form known as cat's-eye actinolite.