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The striations need to be distinct and consistent
Weight: 90g (3
Jade is actually two distinct minerals
not a natural feature
40mm and 90 grams
Opal Butte Specimen — Oregon Rhyolite, Golden Hues Dzi Bead The striations need to beThis Opal Butte specimen comes from the Butte Mine in Morrow County, Oregon, one of only a handful of notable opal producing sites in the United States. Sitting on its natural rhyolite matrix, this piece is clear with soft golden hues, a stable specimen that shows the opal exactly as it formed in the volcanic rock around it. So what makes Opal Butte material distinctive? The opal here formed inside rhyolite geodes, sometimes called thundereggs, where
