celestine

celestine — noun

1. a pale blue or white mineral found in soft rock layers, used in fireworks and gl

1.nounC1
Definition

a pale blue or white mineral found in soft rock layers, used in fireworks and glass to produce bright colours when burned

Example

Naoko found a beautiful celestine crystal while exploring an old mine in Sicily.

collocation: celestine crystal

The museum's geology hall displays a celestine specimen from Madagascar that glows soft blue.

collocation: celestine specimen

Common collocations
  • celestine crystal
  • celestine specimen
  • celestine deposit
  • celestine mine
Synonyms
  • celestite

    the exact same mineral; celestite is the more frequent name in scientific writing

Usage Note

This mineral is also commonly called celestite. The name comes from the Latin word for 'heavenly', referring to its sky-blue colour.

Common Mistakes

The sky had a beautiful celestine colour.
The sky had a beautiful celestial colour.
Celestine is the name of a mineral; celestial means 'relating to the sky or heaven.'

celestine — adjective

Word family

Synonym discussion

Sense: noun/1

Celestine and celestite refer to the exact same mineral (strontium sulfate) and can be used interchangeably. Celestite is the more common name among mineral collectors and in scientific catalogues, while celestine is older and closer to the Latin root caelestis ('heavenly'). Celestial, by contrast, is an adjective meaning 'of or relating to the sky, outer space, or heaven' — it describes stars, angels, or divine matters, not a physical rock. A learner might say 'a celestial blue colour' for something sky-blue, but should not call a mineral sample 'celestial' unless making a poetic comparison.

celestine ↗celestitecelestial ↗

Etymology

LatinGermanFrenchEnglish

This word represents two distinct lemmas with independent origins. LEMMA 1 — Mineral noun: The mineral celestine was named in the 18th century by German mineralogists from the Latin 'caelestis' (heavenly), referring to its sky-blue colour. English adopted the name through German mineralogy texts, and the mineral is also known as celestite. LEMMA 2 — Culinary adjective: The French term 'à la célestine' describes a clear soup garnished with fine strips of crêpe. The name may refer to the Celestine order of monks or to a chef named Célestin. English borrowed the cooking sense in the 19th century, where 'celestine' follows the noun as an invariable adjective (e.g. 'consommé celestine'). The two meanings are unrelated; they merely converge on the same modern English spelling.