Stones/Gems with M

• Marble

  Real natural rock; commonly known as a stone.

• Moonstone

  Feldspar gemstone; classic, well-known stone.

• Malachite

  Green copper mineral; a real semi-precious gem.

• mica

  Real mineral group; valid as a stone.

• Morganite

  Pink beryl gemstone; a genuine semi-precious gem.

• Moon stone

  Also called moonstone, a real feldspar gem.

• Moldavite

  Tektite glass from Czechia, olive‑green meteorite impact gem.

• Meteorite

  Space rock found on Earth; used in jewelry.

• Moissanite

  Real gemstone; naturally rare, often lab-grown.

• Magnetite

  Iron oxide mineral; real and widely known.

• Marcasite

  Real mineral; historically used in jewelry.

• marbel

  Marble misspelled; metamorphic rock used as stone.

• mother of pearl
• Moisanite

  Moissanite; lab gem, silicon carbide, diamond simulant.

• Marmor

  “Marmor” is marble in German; valid decorative stone.

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• Magnesite

  Carbonate mineral, magnesium-rich. Sometimes cut as cabochon.

• Marbles

  Marble is a metamorphic rock, sometimes used decoratively.

• Moss agate

  Green-dotted chalcedony variety, popular ornamental gem.

• Muscovite

  Mica group mineral; sheet silicate, sometimes used as gem.

• Moonstones

  Moonstone is a feldspar gem; plural still fits.

• Mudstone

  Sedimentary rock of silt/clay. Common building stone.

The words in the list Stones/Gems with M come from players of the word game City, Country, River.