Frederick William Rudler

“ With omphacite and smaragdite, garnet forms the peculiar rock called eclogite. The garnets used for industrial purposes are usually found loose in detrital deposits, weathered from the parent rock, though in some important workings the rock is quarried. The garnets employed as gem-stones are described under their respective headings (see Almandine, Cinnamon Stone, Demantoid and Pyrope) . Most of the minerals noticed in this article are of scientific rather than commercial interest. ”

“ All garnets crystallize in the cubic system, usually in rhombic dodecahedra or in icositetrahedra, or in a combination of the two forms (see fig.) . Octahedra and cubes are rare, but the six-faced octahedron occurs in some of the combinations. ”

“ J. H. Jellet. Here also may be placed the green Siberian mineral termed demantoid (q.v.) , sometimes improperly called olivine by jewellers. Uvarovite, named after a Russian minister, Count S. S. Uvarov, is a rare green garnet from Siberia and Canada, but though of fine colour is never found in crystals large enough for gem-stones. Spessartite, or spessartine, named after Spessart, a German locality, is a fine aurora-red garnet, cut for jewelry when sufficiently clear, and rather resembling cinnamon-stone. ”