Yellow Opal

Yellow opal is a variety of common opal displaying a range of saturated yellow and orange banding. 

Most deposits of common opal are of limited geographic extent and volume. At the present time, none are large enough for highly mechanized mining. 

Pink opal and yellow opal are both found in the same deposits, and their formation happened over many centuries in a locality known as Mooka Station (which is why this stone is also called Mookaite) in Western Australia, in an area where a great inland sea once existed. 

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