COOBER PEDY THINGS TO KNOW BEFORE YOU BUY

All-around 95 per cent with the opals mined these days are grey, white potch, or frequent opals which happen to be a lot less beneficial as they don't have opalescence. Black opals as well as other cherished opals are rarer, but a lot more important for their opalescence and various fascinating optical properties.בתקופה זו גם החלו ה�