Stones/Gems with F

  • Genuine mineral/gem; widely recognized.

  • Natural stone (a type of chert); real rock.

  • Major mineral group; includes gem varieties.

  • Old term for flint or pyrite; a real stone.

  • fire opal
  • Ferrite is an iron oxide mineral phase.

  • Means a piece of flint; a real stone.

  • Flagstone is a type of flat sedimentary stone.

  • Fire quartz is quartz with red hematite inclusions.

  • fossils
  • Trade name for red spinel or treated corundum.

  • Pyroxene variety from Fassa, Italy; rare gem.

  • Chalcedony with flower‑like patterns; new-age gem.

  • Green chromium‑rich mica mineral, minor gem

  • Concretion “fairy stones” (staurolite) used as charms

  • Olivine-group mineral; gem variety is peridot

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