Dendritic Black Opal 8mm Round - 15-16 Inch Yellow Jasper depositing layer upon layer of

depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate

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

These strands were cut into beads with some of the material the Chalcedony was mined out of remaining

while maintaining the wood's original structure

Dendritic Black Opal 8mm Round - 15-16 Inch Yellow Jasper depositing layer upon layer ofThis 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.