Watch "Can you GROW an Opal?" on YouTube
https://youtu.be/d7MvGFX_VKo
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The 'Virgin Rainbow' is one of the world's rarest and most expensive opals and it literally glows in the dark [read more: http://bit.ly/2rvKdLZ]
https://twitter.com/Rainmaker1973/status/1410938807009038338
