Madagascar Dendiritc Green Opal 6mm Round A Grade - 15-16 Inch FEATURE04142022 decays and is exposed to

decays and is exposed to mineral-rich water

It is found only in a four square mile area in a remote mountain range of Chihuahua

Its colors include burnt red

The different colored zones in the stone result from different oxidation states of iron

lepidocrocite

Madagascar Dendiritc Green Opal 6mm Round A Grade - 15-16 Inch FEATURE04142022 decays and is exposed toThis variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns. These inclusions consist of iron, manganese and other metallic oxides captured during the forming of the rock. Opals are hydrated amorphous forms of silica, created when silica hardens within the fissures of other stones.