an orange-red translucent variety of opal, valued as a gemstone
fire opal in American English
a reddish opal usually exhibiting a brilliant play of colors in bright light
fire opal in American English
noun
a red Mexican opal, often with a color play
Word origin
[1810–20]This word is first recorded in the period 1810–20. Other words that entered Englishat around the same time include: liberalism, technique, triangulation, unitary, voodoo