DDO109c Dendritic Opal Cabochon Drilled Geodes This specimen does have a

This specimen does have a treated fracture on the polished face

This is a thick polished slab from Big Sandy Reservoir

This piece is a solid black elongated teardrop with classic texture and pitting

and blue banding

sagenite inclusions

DDO109c Dendritic Opal Cabochon Drilled Geodes This specimen does have aThis polished cabochon is made from Turkish Dendritic Opal, showing milky white and translucent chalcedony with black dendritic patterning. 18mm x 36mm Dendritic Opal is technically a form of agate (microcrystalline silica) rather than a type of opal (microscopic silica with no crystalline structure). Since it typically displays opaque chalcedony rather than translucent, this name distinguishes it from other Dendritic Agates that have significantly