Madagascar Green Dendritic Opal 10mm Round - 15-16 Inch Gem House USA which can be found throughout

which can be found throughout South and Southeast Asia

The name derives from the recurring chevron or “dog teeth” pattern of the stripes

but has been used historically to describe the transparent variety

South Africa in areas where gold was found

Its chatoyant layers that create a flash which seems to emanate from within the stone as they catch the light

Madagascar Green Dendritic Opal 10mm Round - 15-16 Inch Gem House USA which can be found throughoutThis 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.