Boulder Opal Specimens in Rocks and Minerals

in opal •  7 years ago  (edited)

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Boulder Opal(s)- Queensland, Australia. Personal Collection


Australian Boulder opals are the second most valuable type of opal (following black opal). The thin layer of opal in boulder opals can display any colour of the spectrum in a beautiful play of color.
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ooo I love opal!

Me too! It's The best birthstone too. I may be bias tho being an October baby ;-) I added another boulder opal specimen to the post which you might enjoy as well ~