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Impressive images. For a minute i started googling the composition of opals, thinking there must be a smarter way to find them... until I stopped and realised w
by Roritharr 10y ago
Impressive images. For a minute i started googling the composition of opals, thinking there must be a smarter way to find them... until I stopped and realised what rabbithole I was beginning to climb down.
- steveax 10y agoFinding opals is not the problem, they are everywhere there, finding opals with valuable color traits is the problem. It's highly random is my understanding.
- phillc73 10y agoI traded opals for a while, but my supply was boulder opals from around Quilpie in Queensland. Not underground like Coober Pedy and White Cliffs, but still not a whole lot there![1] One of the best introductory books about opals is Opal Identification & Value by Paul B. Downing. It's a few years old now (latest version 2002, first published 1992), but really does cover all the basics of different types and their value very well. [1] http://www.opalsdownunder.com.au/learn-about-opals/intermediate/queensland-opal-mining-fields http://www.opalsdownunder.com.au/learn-about-opals/intermedi...
- cpursley 10y agoThis comment is why I read hacker news. Talk about finding a "gem" of a comment.