Onyx
A famous medicinal stone was at one time in the Abbey of St. Alban, founded in 793 A.D. by Offa, King of Mercia, in honor of the British protomartyr. In 1010, under Abbot Geoffrey de Gorham, a sumptuous shrine was erected to receive St. Alban’s body; this shrine was principally of silver, and was richly adorned with precious stones, chosen from among those in the treasury of the monastery. The records state that one of these stones “was so large that a man could not grasp it in his hand.” It was believed to give great help to women in childbirth. Hence, it was not set in the shrine, but was left free, so that it might be taken from house to house as required. The size of this stone and the fact that it was not used for ornamentation might have induced the belief that it was one of the singular “eagle-stones,” so celebrated in ancient and medieval times, but it is expressly described as an onyx-gem, the gift of King Ethelred II (968–1016) to the monastery. From the description we learn that on one side of this onyx was cut an image of Esculapius, the god of healing, and on the other that of “a boy bearing a buckler.” As the art of gem-cutting was practically unknown in Europe in the tenth century, this must have been an antique gem, and may have served as a pagan amulet many centuries before it was placed upon the shrine of a Christian saint and used as a Christian amulet.[[306]]
An old manuscript of Matthew Paris[[307]] gives a sketch of the gem from this author’s own hand. As the special power exerted by this talisman was to aid women in their confinements, it was loaned out from time to time to such as were considered worthy of the honor. In one case, however, it came into untrustworthy hands, for the favored lady failed to return the gem when her immediate need of its help had passed, retaining it in her possession until her death, when she bequeathed it to her daughter. During her lifetime the latter appears to have had no prickings of conscience, but on her death-bed, possibly through the exhortations of her confessor, she made provision that the long-lost sardonyx should be returned to the Abbey. It is said to have borne the name Kaadman, which Mr. Thomas Wright regarded as a corruption of cadmeus or cameus, early forms of our “cameo.”[[308]]