Opal - 8-Inch

White African Opal is a white to cream to light tan stone with veining of black or gray. Like all Opals, it is a form of hydrated amorphous silica,...

White African Opal is a white to cream to light tan stone with veining of black or gray. Like all Opals, it is a form of hydrated amorphous silica,...

Blue Peruvian Opal naturally occurs with swirling patterns of deep blues, blue to greens and greens swirled with yellow to green, rust, brown and o...