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

resulting in fossils that are chalk-white

Dragon Blood Jasper is a variety of Quartz with veins of blood red that run through the predominantly light green to dark green stone

Boulder Opal is a golden-brown to dark brown stone

Jasper is an opaque

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.