Opal - Mineral Specimen mineral collection like something that built up

like something that built up slowly over time in a confined space

geological processes introduce silica-rich fluids into the rock where crocidolite is present

lepidolite

I mold them for production to make this simple

Approximate Size for 1 piece: 49mm x 35mm x 35mm Approximate Weight for 1 piece: 95g

Opal - Mineral Specimen mineral collection like something that built upMined from: Coober Pedy, South Australia, Australia Description: This Australian opal is shown in rough form, still partially embedded in its host rock, with a mix of pale blue grey translucent silica and earthy red brown ironstone staining. The surface shows natural weathering and pitting, with areas of exposed opal displaying a waxy to slightly glassy luster. Subtle internal color shifts are visible in the cleaner sections, with faint hints of blue