Opal - Mineral Specimen indian epidote quartz and time that transformed nickel-rich

and time that transformed nickel-rich soil into a gem-quality chalcedony

X-Large                                                                                                              Approximate Size of 1 piece: 55mm x 30mm x 15mmApproximate Weight of 1 piece: 10g

30mm  Shaft Diameters range from : 5

5cmApproximate Weight of 1 piece: 175g

Geographic Age: 150 mya

Opal - Mineral Specimen indian epidote quartz and time that transformed nickel-richMined from: Coober Pedy, South Australia, Australia Description: This Australian opal specimen is presented in rough form within its natural host rock, showing pale grey to milky translucent opal along the edges with a soft waxy luster. The silica contrasts against a light, porous sandstone matrix, with iron rich staining creating subtle orange and reddish patches throughout. The opal itself shows conchoidal fracture surfaces and internal cloudiness,