This is a mixed lot of 3 x natural Ethiopian Welo Opal, which are shaped and polished, ready to be mounted or displayed.
They are freeform , with the longest piece 16mm, the broadest 10mm, all approx. 3mm thick and 6.80 carats combined.
All have a pale grey/cream background colour, with mainly flashes of green and red across the surfaces.
These opals have a better colour play in artificial light than natural daylight.