A mineral form of strontium sulfate that is often colorless or pale blue, valued by mineral collectors.
From the Latin 'caelestis' meaning 'heavenly' or 'of the sky,' named for the pale blue color that resembles the sky. It was named in the late 1800s by mineralogists seeking poetic names for their discoveries.
Celestine gets its name from its sky-blue color, and the name is so evocative that people feel it's romantic—it's one of those minerals that sounds mythical. In reality, it's mostly mined for strontium used in flares and fireworks, but its name makes it sound like something from a fantasy novel.
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