Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A variety of opal occurring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses.

from the GNU version of the Collaborative International Dictionary of English

  • n. A variety of opal occuring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses, having a pearly luster; -- so called from Fiora, in Ischia.

from The Century Dictionary and Cyclopedia

  • n. A variety of silicious sinter found incrusting volcanic tufa.

Etymologies

Fiora +‎ -ite (Wiktionary)

Examples

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