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Gemstones, Minerals & Fossils
Gemstones and Minerals
A look through my opal mine
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<blockquote data-quote="boobook" data-source="post: 385379" data-attributes="member: 1605"><p>Those two nice pieces would be either Yowah or Koroit matrix opal.</p><p>Around Opalton, similar matrix opal occurs in fossilised tree root systems.</p><p></p><p>Boulder opal is usually more "flattish" where the opal formed in a thin crack in an ironstone "boulder" and rivals Lightning Ridge material in its flash and fire especially when there is a manganese backing between the opal and ironstone.</p><p>The fact it is not a solid, black potch backed opal (LR) but a natural formed "doublet" makes for the difference in value.</p><p></p><p>Just a few years ago, trying to sell boulder opal in Lightning Ridge for a decent price was hopeless. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> </p><p>Take it to Coober Pedy and they cant get enough of it. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p>Mike</p></blockquote><p></p>
[QUOTE="boobook, post: 385379, member: 1605"] Those two nice pieces would be either Yowah or Koroit matrix opal. Around Opalton, similar matrix opal occurs in fossilised tree root systems. Boulder opal is usually more "flattish" where the opal formed in a thin crack in an ironstone "boulder" and rivals Lightning Ridge material in its flash and fire especially when there is a manganese backing between the opal and ironstone. The fact it is not a solid, black potch backed opal (LR) but a natural formed "doublet" makes for the difference in value. Just a few years ago, trying to sell boulder opal in Lightning Ridge for a decent price was hopeless. :( Take it to Coober Pedy and they cant get enough of it. :) Mike [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
A look through my opal mine
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