Vintage Fire Opal Ring cira 1990s with 2.15 cttw set in 18k yellow gold and 4 diamonds totaling .20 cttw E-F VS. The ring measures size 6.

Fire Opal is an amorphous mineraloid comprising an accumulation of tiny hydrated silica spheres that produce a dominant reddish-orange spectrum upon light reflection. Although it is commonly misclassified as a “mineral,” fire opal is actually not a mineral because it does not have its own crystalline structure.