A clear deep blue variety of corundum, valued as a precious stone.
A white, yellow, or purple variety of corundum, either clear or translucent.
A deep blue colour.
Any hummingbird in the genera Hylocharis and Chlorestes, as well as the rufous-throated sapphire, which is now in the genus Amazilia.
Any of the butterflies in the southern Asian lycaenid genus Heliophorus.