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Opal vs Pebble - What's the difference?

opal | pebble |

As nouns the difference between opal and pebble

is that opal is opal while pebble is a small stone, especially one rounded by the action of water.

As a verb pebble is

to pave with pebbles.

opal

English

(wikipedia opal)

Noun

(en noun)
  • (mineralogy) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity, of the chemical formula Si]]O2· n[[water, H2O.
  • * {{quote-magazine, date=2012-03
    • , author=Lee A. Groat , title=Gemstones , volume=100, issue=2, page=128 , magazine=(American Scientist) citation , passage=Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals , peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)}}
  • (biology, genetics, biochemistry) A colloquial name used in molecular biology referring to a particular stop codon sequence, "UGA."

    • Derived terms

    * fire opal * wood opal * opaline * opalesce

    References

    Anagrams

    * ----

    pebble

    English

    Noun

    (en noun)
  • A small stone, especially one rounded by the action of water.
  • * Shakespeare
    • the pebbles on the hungry beach
  • * Milton
    • children gathering pebbles on the shore
  • (geology) A particle from 4 to 64 mm in diameter, following the Wentworth scale
  • (curling) A small droplet of water intentionally sprayed on the ice that cause irregularities on the surface.
  • Transparent and colourless rock crystal.
    • Brazilian pebble

    Verb

  • To pave with pebbles.
  • (curling) To deposit water droplets on the ice. e.g. to pebble the ice between games.