Dendritic Black Opal 4mm Round - 15-16 Inch Featured_03052026 Botswana Agate was formed nearly

Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth

Boulder Opal is a golden-brown to dark brown stone

Additionally

this semi to precious variety of quartz is found in many locations around the world

the dragon slayer

Dendritic Black Opal 4mm Round - 15-16 Inch Featured_03052026 Botswana Agate was formed nearlyThis 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.