Boulder Opal from Central Queensland.
Seams of opal running across the faces of two pieces of ironstone
one is undulating while the other is a large blue seam.
There is also one piece of Koroit material.
The pieces are wet to bring out their colours.
The Ruler is measured in millimetres.
Measurements are generally rounded down and approximate.
Colour: Please note the camera has been white-balanced to give truer colours NO Photo Shopped enhancement.