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Amber as talisman. Amber has from the most remote ages been familiar to humanity, ornaments in this material having come down to us, shaped by men of the Stone Age, thus proving its antiquity. Many fanciful theories were given in bygone days with regard to its origin, amongst others the historian Nicias stating [...] The chief of these are the garnets, crystallising in the cubic system, and anhydrous. The garnet is usually in the form of a rhombic dodecahedron, or as a trisoctahedron (called also sometimes an icosatetrahedron), or a mixture of the two, though the stones appear in other cubic forms. In hardness they vary from [...] |
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