This is a shaped and polished freeform, ready to mount or display, natural Welo opal from the mines of Ethiopia.
It is high domed with an irregular shape approx. 16mm by 7mm, 5mm thick and of 2.60 carats. This opal has a pale grey background colour, with bright flashes of green, yellow, red, blue and orange radiating from within the crystal itself.
A unique stone, which would make an unusual ring, pendant or simply kept as a mineral sample.