n. [ OE. saphir, F. saphir, L. sapphirus, Gr. &unr_;, of Oriental origin; cf. Heb. sappīr. ] 1. (Min.) Native alumina or aluminium sesquioxide, Al2O3; corundum; esp., the blue transparent variety of corundum, highly prized as a gem. [ 1913 Webster ]

Of rubies, sapphires, and of pearlés white. Chaucer. [ 1913 Webster ]

☞ Sapphire occurs in hexagonal crystals and also in granular and massive forms. The name sapphire is usually restricted to the blue crystals, while the bright red crystals are called Oriental rubies (see under Ruby), the amethystine variety Oriental amethyst (see under Amethyst), and the dull massive varieties corundum (a name which is also used as a general term to include all varieties). See Corundum. [ 1913 Webster ]

2. The color of the gem; bright blue. [ 1913 Webster ]

3. (Zool.) Any humming bird of the genus Hylocharis, native of South America. The throat and breast are usually bright blue. [ 1913 Webster ]

Star sapphire, or
Asteriated sapphire (Min.), a kind of sapphire which exhibits asterism. [ 1913 Webster ]

a. Of or resembling sapphire; sapphirine; blue. “The sapphire blaze.” Gray. [ 1913 Webster ]

[ Equiv. to F. saphir d'eau. ] (Min.) A deep blue variety of iolite, sometimes used as a gem; -- called also saphir d'eau. [ 1913 Webster ]