What is difference between agate and onyx?

  1. hlee1321 profile image40
    hlee1321posted 2 years ago

    What is difference between agate and onyx?

  2. TolovajWordsmith profile image86
    TolovajWordsmithposted 2 years ago

    Basically it's the same chemical substance (SiO2), the difference is mainly in inclusions which lead to different look. Onyx is black in general and agate is lighter, more brownish.

  3. Kristen Howe profile image89
    Kristen Howeposted 2 years ago

    This is from my online dictionary: a semiprecious variety of agate with different colors in layers.

    agate |ˈagit|
    an ornamental stone consisting of a hard variety of chalcedony, typically banded in appearance.
    • a colored toy marble resembling a banded gemstone.