DDO120c Dendritic Opal Cabochon Animal Carvings Michigan's Keweenaw Peninsula is considered

Michigan's Keweenaw Peninsula is considered the most important locality in the world for pure native copper

Rainbow Obsidian contains inclusions of the mineral hedenbergite

Green Opal displays a light lime green color

at some point

DDO120c Dendritic Opal Cabochon Animal Carvings Michigan's Keweenaw Peninsula is consideredThis polished cabochon is made from Turkish Dendritic Opal, and shows opaque milky chalcedony with black dendritic patterning. 25mm x 46. 5mm 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