Heliotropium[1] is found in Æthiopia, Africa, and Cyprus: it is of a leek-green colour, streaked with blood-red veins. It has been thus named,[2] from the circumstance that, if placed in a vessel of water and exposed to the full light of the sun, it changes to a reflected colour like that of blood; this being the case with the stone of Æthiopia more particularly. Out of the water, too, it reflects the figure of the sun like a mirror, and it discovers eclipses of that luminary by showing the moon passing over its disk. In the use of this stone, also, we have a most glaring illustration of the impudent effrontery of the adepts in magic, for they say that, if it is combined with the plant[3] heliotropium, and certain incantations are then repeated over it, it will render the person invisible who carries it about him.

Hephæsititis[4] also, though a radiant stone, partakes of the properties of a mirror in reflecting objects. The mode of testing it is to put it into boiling water, which should immediately become cold. If exposed to the rays of the sun, it should instantly cause dry fuel to ignite:[5] Corycus[6] is the place where it is found. Hermuaidoion[7] is so called from the resemblance to the male organs which it presents, on a ground that is sometimes white, sometimes black, and sometimes of a pallid hue, with a circle surrounding it of a golden colour. Hexecontalithos[8] receives its name from the numerous variety of colours which, small as it is, it presents: it is found in Troglodytica.[9] Hieracitis[10] is entirely covered with mottled streaks, resembling a kite's feathers alternately with black. Hammitis[11] is similar in appearance to the spawn of fish: there is also one variety of it which has all the appearance of being composed of nitre,[12] except that it is remarkably hard. Hammonis cornu[13] is reckoned among the most sacred gems of Æthiopia; it is of a golden colour, like a ram's horn in shape, and ensures prophetic dreams, it is said.

Hormiscion[14] is one of the most pleasing stones to the sight; it is of a fiery colour, and emits rays like gold, tipped at the extremity with a whitish light. Hyænia[15] is derived from the eyes of the hyæna, it is said, the animal being hunted to obtain it; placed beneath the tongue, if we believe the story, it will enable a person to prophesy the future. Hæmatitis,[16] of the very finest quality, comes from Æthiopia, but it is found in Arabia and Africa as well. It is a stone of a blood-red colour, and we must not omit to mention the assurance given [by the magicians], that the possession of it reveals treacherous designs on the part of the barbarians. Zachalias of Babylon, in the books which he dedicated to King Mithridates, attributing the destinies of man to certain properties innate in precious stones, is not content with vaunting the merits of this stone as curative of diseases of the eyes and liver, but recommends it also as ensuring success to petitions addressed to kings. He also makes it play its part in lawsuits and judg- ments, and even goes so far as to say that it is highly beneficial to be rubbed with it on the field of battle. There is another stone of the same class, called "menui" by the people of India, and "xanthos"[17] by the Greeks: it is of a whitish, tawny colour.