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Gemstones, Minerals & Fossils
Lapidary
Anyone treated fairy opal before?
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<blockquote data-quote="KarlS" data-source="post: 312939" data-attributes="member: 2409"><p>I used to mine opal in Coober Pedy in seventies and had friend in Andamooka. He used to make pretty cabs from matrix opal, using sugar and sulphuric acid. What he explained to me is that the sugar fill pores in the stone and the acid converts sugar to carbon. He told me it should work on any porous stone. </p><p>Karl</p></blockquote><p></p>
[QUOTE="KarlS, post: 312939, member: 2409"] I used to mine opal in Coober Pedy in seventies and had friend in Andamooka. He used to make pretty cabs from matrix opal, using sugar and sulphuric acid. What he explained to me is that the sugar fill pores in the stone and the acid converts sugar to carbon. He told me it should work on any porous stone. Karl [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Anyone treated fairy opal before?
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