Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase.
Chrysoprase opens, activates and energises the heart and sacral chakras, balances yin-yang energy, and brings Universal energy into the physical body. It induces deep meditative states, and imparts a sense of being a part of the divine whole. Chrysoprase promotes love of truth.