Fire opal consists of silicic acid with high water content. The color comes from fire traces of iron oxide. The cavities and crevices in the Mexican highlands have significant fire opal deposits amongst their many extinct volcanoes.
Red, Orange; all rainbow colors
Vitreous – also pearly or resinous
A good gemstone to make feelings flow and resolve blockages; Mexican fire opals bestow courage, stamina and will power.
In ancient times, fire opals were admired as symbols of a fervent love for someone. The Mayans and Aztecs used this gemstone in mosaics for ritualistic purposes.
* Scientific proof may not be available to substantiate these claims.