It is said that Albertus Magnus first identified the chalcedony of today in the 13th century, although according to many authorities this was not done until the 15th century at the very earliest. The ancient chalcedony is classed amongst such stones as the Leucachates and Cerachates. Pliny describes the ancient chalcedony as of “green mixed with blue as the feathers of the peacock’s tail or of the pigeon’s neck,” and Holme quoting from Pliny in the Armoury, 1688, says: “The chalcedon or calchedoine, being well chafed and warmed, will draw a straw or a rush to it.” The calcedon described by Pliny was not found in his time, but our chalcedony was greatly used in fine art work in all ages. A chalcedony showing tiny red and brown spots has been termed the stone of St. Stephen, in allusion to the martyrdom of that Saint as described in Chapter 7 of the Acts. The chalcedony is a symbol of enthusiasm, and is the emblem of Victory Divine amongst the jewels of the Rosicrucians. It has also been termed the Mother Stone, and under the name of Leucachate was sacred to Diana. It protected the voyager on the ocean tracts from tempests and terrors, drove away evil spirits, banished sadness and melancholy, secured public favour and protected the wearer in times of political revolutions. The chalcedony is under the zodiacal Cancer. CHALCEDONYX. The chalcedonyx is really a chalcedony adorned with lines of white and grey. It is included in the zodiacal Cancer. CHIASTOLITE “_On her white breast a sparkling cross she wore._” POPE. The Chiastolite obtains its name from the Greek word CHIASTOS, crossed. It is also known as Macle, from the Latin Macula, a spot. It is a form of Andalusite found in certain metamorphic rock. During the process of crystallization certain impurities of a carbonaceous nature are dispersed across the stone which displays from this cause different forms of cross, tessellated or lozenge-shaped markings, which show out curiously when the stone is cut or broken. The hardness of the stone is not great—specimens sometimes being as low as 3 in Mohs’ scale. The colour varies from grey to yellow, pink, red, white, and deep brown.