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How does a rock become a stone?

  1. Sep 24, 2005 #1
    I'm not sure if this question will make sense, but is there a difference between a rock and a stone and if so, please explain. I'm also curious as to when a rock can be called a stone, or vica versa. Thanks. :bugeye:
  2. jcsd
  3. Sep 25, 2005 #2
    i normally recognise like this:

    Pebble: smallest, grain sized
    Stone: bit bigger, marble sized
    rock: a bit more bigger: fist size.
    Boulder: huge.
  4. Sep 25, 2005 #3


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    Strctly speaking, there is very little difference- the two are often synonymous.
    The main difference I can think of is that stone is normally only used to describe detached pieces of rock (rock can be detached, or as a mass). I never hear my lecturers talking about a stone-face, or the underlying stone, only rock face, etc. Describing a rock face as a stone face wouldn't be inaccurate as such, but very unusual. It's more a question of linguistics than earth sciences.

    I've never come across any size classification scheme that uses rock or stone before. I don't think there is any strict difference in size.
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