jacinth

• The oriental jacinth, or hyacinth, is a brown-red corundum, which is more stable than the ordinary hyacinth, this latter being a form of zircon; it changes colour on exposure to light, which colour is not restored by subsequent retention in darkness The blue sapphire is of all shades of blue, from cornflower blue to the very palest tints of this colour, all the gradations from light to dark purple blues, and, in fact, so many shades of tone and colour that they become almost as numerous as the stones. —  The Chemistry, Properties and Tests of Precious Stones
• In Alphonso's "Clericalis Disciplina" a serpent was mentioned with eyes of real jacinth, and in the romantic history of Alexander, the Conqueror of Emathia was said to have found in the vale of Jordan snakes "with collars of real emeralds growing on their backs." —  The Picture of Dorian Gray
• For instance, we are informed by an old author, that the ring of a woman born in January should have a jacinth or garnet in it, for these stones belong to that month, and express constancy and fidelity. —  The Mysteries of All Nations Rise and Progress of Superstition, Laws Against and Trials of Witches, Ancient and Modern Delusions Together With Strange Customs, Fables, and Tales
• He found the selenite at once where I had placed it; but though we both of us sought closely for the jacinth we could not find it. —  Jerome Cardan A Biographical Study
• The jacinth, attribute of charity and succour vouchsafed to sinners, is appropriate to the Auxilium Christianorum and the refugium peccatorum of the prayers. —  The Cathedral

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