This is a shaped and polished opal, ready to mount or display. It comes from the Coober Pedy mines of Australia.
It is oval in shape, polished on the front and measures 1cm x 8mm. It weighs 1.65 carat.
This is a natural opal, with a cream-coloured background and pin-fire flashes of pink, green, blue and orange across its entire surface.
A beautiful opal, which would make a lovely pendant or could simply be kept as a mineral sample.