40 Cts, Natural Australian Crystal Opal, Coober Pedy In The Rough, AAA Grade. This is a massive stone full of colour. It has a very thick colour bar all around. There was sand in the middle and you can see the indentation. The sand doesn't go through it is all cleaned for you with minimal risk. It will make one massive bright gem or 4 to 5 good size ones. There are reds and orange colours in the bar. The top is just the start of the colour the stone has plenty more to give. 36x23x8mm
