fire opal

The red and yellow bright coloured varieties of fire-opal are found near Zimapan, in Mexico.

But there was Kitty's great fire-opal, glowing like a coal on her breast, seeming to breathe as she breathed.

The choicest of these specimens is the true fire-opal, which in brilliancy and iridescence excels all others.

She could see it far up, glowing as red as her fire-opal in the light of the embers.

Mexico furnishes considerable opal, and is notable for its fine "fire opal" or "cherry opal."