Chrysoprase crystallizes in the same form as chalcedony making it an interesting stone. Most green gemstones owe their color to chromium or vanadium, but chrysoprase derives it's beautiful coloration from the nickel content it contains. The name chrysoprase comes from the Greek chrysos meaning 'gold' and prason, meaning 'leek' or 'bloom'. The Greeks bestowed this name due to the presence of the golden drops that appear to be contained in the stone. Metaphysically - believed to be good for balancing the yin-yang and aligning chakras. Chrysoprase is sometimes called "Australian Jade" for its brilliant green coloring. Chrysoprase was used by many ancient cultures in ornamental objects and jewelry including the Egyptians, Greeks, and Romans. It was even believed to have the power to turn the wearer invisible. Prussia's Frederick the Great so loved the stone that he commissioned two tables made of chrysoprase. Chrysoprase is even mentioned in the Bible and is therefore considered to be the tenth in the walls of the heaven.