Glass-like deposits of black crystal opal wrap around rock.

Thick formations of opal on all four surfaces of rock.

Rich black colour tone with hints of indigo and purple.

Perfect to keep as an unusual and unique specimen.

Alternatively, can cut to artisan jewellery stones.

Traces of potential internal seams to explore.

High density ironstone host rock mined at Winton opal fields.

Mine Area: Central West Queensland, Australia.

Approximate weight: 171 grams.

Approximate dimensions: 8 x 4 x 4 cm

Photos taken in natural outdoor daylight.

Some photos in dry as-mined condition.

Some photos wet to simulate polishing potential of opal.