Meaning of the word chalcedony in English

What does chalcedony mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

chalcedony

US /kælˈsɛd.ə.ni/
UK /kælˈsɛd.ə.ni/

Noun

a translucent to transparent cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite

Example:
The ancient Egyptians used chalcedony for carving scarabs and seals.
She wore a necklace with a beautiful blue chalcedony pendant.