Purple Dendritic Opal 6mm Round - 15-16 Inch Color_Clear Shattuckite is a pseudomorph

Shattuckite is a pseudomorph

the other being Diamond

Pietersite is composed of Tiger Eye

Peruvian Turquoise is also known as Turquoise Chrysocolla

Pink Opal naturally occurs in shades of extremely pale to deeper pink

Purple Dendritic Opal 6mm Round - 15-16 Inch Color_Clear Shattuckite is a pseudomorphThis 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.