Definition of sapphire
1a
: a gem variety of corundum in transparent or translucent crystals of a color other than red
especially
: one of a transparent rich blue
b
: a gem of such corundum
2
: a deep purplish-blue color
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Merriam-Webster unabridged
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Time Traveler for sapphire
The first known use of sapphire was in the 13th century
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