SAPPHIRE ,1 ablue transparent variety of
See also:corundum, or native alumina, much valued as a
See also:stone . It is essentially the same
See also:mineral as
See also:ruby, from which it differs chiefly in
See also:colour . The colour of the normal sapphire varies from the palest blue to deep
See also:indigo, the most esteemed tint being that of the blue cornflower . Many of the crystals are parti-coloured, the blue being distributed in patches in a colourless or yellow stone; but by skilful cutting, the deep-coloured portion may be caused to impart colour to the entire gem . As the sapphire crystallizes in the hexagonal
See also:system it is dichroic, but in
See also:pale stones this character may not be well marked . In a deep-coloured stone the colour may be resolved, by the dichroscope, into an
See also:ultramarine 1 Indirectly from Gr. o&orq5uupos, but there seems no doubt that this
See also:term, like the
See also:Hebrew sapir of the Old Testament, was formerly applied to what is now called lapis lazuli; the
See also:modern sapphire was probably known as u&xwOos (
See also:hyacinthus) . colour . It is a silicate, containing aluminium, magnesium and iron, brought originally from
See also:Greenland, and since found in a
See also:rock from the
See also:district in India . (F . W .
SAPPHICS SAPPHIC METRE
SAPPHO (7th–6th centuries B.C.)
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