Boulder Opal is a Solid form of Australian Opal. It comprises of hydrated silica formed on natural Iron stone. This Iron stone is the host structure and often has an undulating surface. Commonly mined in Quilpie, Queensland.
Boulder Opal is a Solid form of Australian Opal. It comprises of hydrated silica formed on natural Iron stone. This Iron stone is the host structure and often has an undulating surface. Commonly mined in Quilpie, Queensland.