Green Opal: The Ultimate Guide to Meaning, Properties, Uses

green opal

Despite being recognized as a mineral, Green Opal is not such in the strict sense of the word, since it is composed of amorphous silica. Classified within the oxides with formula SiO2nH2O. The composition is the same as quartz with the difference that the opal is hydrated, that is, it has water molecules in its … Read more