Carved Scarabæi of all sizes and qualities are quite common in the cabinets of Europe. They were principally used for sets in rings, necklaces, and other ornamental trinkets, and are now called Scarabæi gems,[112] though some suppose them to have been money. All of these gems, Winkleman says, which have a beetle on the convex side, and an Egyptian deity on the concave, are of a date posterior to the Ptolemies; and, moreover, all the ordinary gems, which represent the figures or heads of Serapis, or Anubis, are of the Roman era.[113] According to C. Caylus, the Egyptians used these gems for amulets, and made them of all substances except metal. They preferred, however, those of pottery, covered with green and black enamel. Cylinders, squares, and pyramids were first used; then came the Scarabæi, which were the last forms. They now began to have the appearance of seals or stamps, and many believe them to have been such. The body of the beetle being a convenient hold for the hand, and the base a place of safety and facility to engrave whatsoever was wished to be stamped or printed. Many of these characters are as yet unintelligible. These seals are made of the most durable stones, and their convex part commonly worked without much art. The Egyptian form of the Scarabæus, which somewhat resembled a half-walnut, the Etruscans adopted in the manufacture of their gems. These scarcely exceed the natural size of the Scarabæus which they have on the convex side. They have also a hole drilled through them lengthwise, for suspension from the neck, or annexation to some other part of the person. They are generally cornelians. Some are of a style very ancient, and of extremely precious work, although in the Etruscan manner, which is correctness of design in the figures, and hardness in the turn of the muscles. The Greeks also made use of the Scarabæus in their gems; but in the end they suppressed the insect, and preserved alone the oval form which the base presented, for the body of the sculpture. They also mounted them in their rings.[114] Several Egyptian Scarabæi were among the relics discovered by Layard at Arban on the banks of the Khabour; and similar objects have been brought from Nimroud, and various other ruins in Assyria.[115] Layard has figured a bronze cup, and two bronze cubes, found among the ruins of Nimroud, on which occur as ornaments the figures of Scarabs. Those on the cubes are with outstretched wings, inlaid with gold. The cubes have much the appearance of weights.[116] The Scarabæus was not only venerated when alive, but embalmed after death. In that state they are found at Thebes. It, however, was not the only insect thus honored, for in one of the heads brought by Mr. Wilkinson from Thebes, several others were discovered. These were submitted to Mr. Hope for examination; and the species ascertained by this gentleman, Mr. Pettigrew has enumerated as follows: 1. Corynetes violaceous, _Fab._ 2. Necrobia mumiarum, _Hope_.