DDO118c Dendritic Opal Cabochon Rectangle Hardness of about 2

Hardness of about 2

and grey agate with banding and tube formations

Polished Butterfly Jasper Cabochon with blue

one of the original minerals mistaken for gold during the big gold rush

DDO118c Dendritic Opal Cabochon Rectangle Hardness of about 2This polished cabochon is made from Turkish Dendritic Opal, and shows translucent and opaque white chalcedony with black dendrites. 29mm x 33mm 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 different