Black Opal Gemstones

  • Hardness

    5.5 - 6.5 on the Mohs scale.

  • Occurrence

    Australia, former Czechoslovakia, U.S., Brazil, Mexico and southern Africa. Opal and tourmaline are the birthstones of the month of October.

  • Appearance

    Dark, iridescent, and opalescent with a wide range of internal colors.

  • Enhancements

    Opal is rarely impregnated with colorless oil, wax and resins.

    More information on gemstone enhancements.

  • Gemstone Family

    Black Opal is a member of the Opal gemstone family.

Black Opal
Black Opal

0.11 ct., 'AAA' Grade
5.1x3.0mm Cabochon, Oval Cut
Medium Dark
Vivid Orangy Red
Slightly Translucent
[N] Not enhanced.
One of a kind.
With a play of green, blue and predominant red.
Black Opal