Dendritic Opal 6mm Hexagon - 15-16 Inch Stone Type_Petrified sometimes with a striking black

sometimes with a striking black or brown matrix therefore giving it a more traditional look with blue dominance

“Butter” suggests qualities of smoothness

Blue Tiger Eye is a naturally occurring dark stone with chatoyant layers that create a flash which seems to emanate from within the stone as they catch the light

and it is also known as Toog

Dendritic Opal 6mm Hexagon - 15-16 Inch Stone Type_Petrified sometimes with a striking blackThis 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.