moonstone

M3O1O1N1S1T1O1N1E1
US/ˈmunˌstoʊn/

noun

A translucent gemstone, an orthoclase feldspar, that has a pearly lustre.

Less commonScrabble 11
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Meanings

nounmoonstone (countable and uncountable, plural moonstones)

plural moonstones

  1. countableuncountablechemistryA translucent gemstone, an orthoclase feldspar, that has a pearly lustre.

    To give light to the presence chamber were seven escarbuncles, great as pumpkins, hung in order down the length of it, and nine fair moonstones standing in order on silver pedestals between the pillars on the dais.

    1922, E[ric] R[ücker] Eddison, The Worm Ouroboros: A Romance, London: Jonathan Cape […], →OCLC, page 3

Synonyms & antonyms

Also see
hecatolite

Origin

From moon + stone.

Full word history & related roots →

Translations

Ancient Greek σεληνίτης
  • σεληνίτης (selēnítēs)translucent gemstone
Arabic حَجَرُ ٱلْقَمْر
  • حَجَرُ ٱلْقَمْر (ḥajaru l-qamr)translucent gemstone
Catalan pedra de lluna
  • pedra de llunatranslucent gemstone
Chinese Mandarin 月長石 /月长石
  • 月長石 /月长石 (yuèzhǎngshí)translucent gemstone
Czech měsíček
  • měsíčektranslucent gemstone
Dutch maansteen
  • maansteentranslucent gemstone
Finnish kuukivi
  • kuukivitranslucent gemstone
French pierre de lune
  • pierre de lunetranslucent gemstone
German Mondstein
  • Mondsteintranslucent gemstone
Hindi मुक्ता
  • मुक्ता (muktā)translucent gemstone
Hungarian holdkő
  • holdkőtranslucent gemstone
Italian pietra di luna, lunaria
  • pietra di lunatranslucent gemstone
  • lunariatranslucent gemstone
Japanese 月長石
  • 月長石 (getchōseki)translucent gemstone
Korean 월장석
  • 월장석 (woljangseok)translucent gemstone
Polish kamień księżycowy
  • kamień księżycowytranslucent gemstone
Portuguese pedra da Lua
  • pedra da Luatranslucent gemstone
Russian лу́нный ка́мень
  • лу́нный ка́мень (lúnnyj kámenʹ)translucent gemstone
Spanish piedra de luna
  • piedra de lunatranslucent gemstone
Swedish månsten
  • månstentranslucent gemstone
Thai มุกดา
  • มุกดา (múk-daa)translucent gemstone
Welsh lloerfaen
  • lloerfaentranslucent gemstone
Cite this entry
APA

moonstone. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/moonstone

MLA

“moonstone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/moonstone. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “moonstone,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/moonstone.

Source: moonstone on Wiktionary, CC BY-SA 4.0.