0 a precious stone, usually bright blue, that is often used in jewellery:
1 having a bright blue colour:
a sapphire sea
The sun shimmers off the water with a million sapphire highlights.
2 a transparent precious stone that is usually bright blue
His deep tan emphasized his sapphire eyes.
The sea had the texture of silk and was a deep sapphire blue.
Titanium:sapphire laser as an excitation source in two-photon spectroscopy.
Each of these enamelled plates is surrounded by blue sapphires and pearls in raised filigree settings.
Nevertheless, diamonds, rubies, sapphires, and emeralds still have a reputation that exceeds those of other gemstones.
At that time, 95% of all the world's sapphires were being heated to enhance their natural color.
Blue sapphires are evaluated based upon the purity of their primary hue.
