I think you should describe the stone you want in more detail. The
proper definition of "Fire Opal" is an opal of fiery orange color.
A fire opal does not have to have any "play of color" to be a fire
I believe that I remember from G.I.A. colored stone course (1977)
fire opal can be either orange or red, transparent, and play of
color or not.
Richard Hart G.G.