Purple Dendritic Opal 6mm Round - 15-16 Inch Stone Type_Wood Opalite or black and can be

or black and can be distributed randomly or in bundles or star-like formations

while its variations in color are better known by other names: Emerald (green)

black or yellow

pink and golden mottling and spots within the primarily black stone

This Lapis has been treated to enhance the blue color

Purple Dendritic Opal 6mm Round - 15-16 Inch Stone Type_Wood Opalite or black and can beThis 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.