Madagascar Green Dendritic Opal 8mm Round - 15-16 Inch 9mm It can be colorless

It can be colorless

having been worn by shamans

It is not a granite

The presence of Manganese within the stone produces the purple hue

Famous malachite mines in the Ural mountains of Russia once produced 20 to ton blocks of the stone

Madagascar Green Dendritic Opal 8mm Round - 15-16 Inch 9mm It can be colorlessThis 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.