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Gemstones, Minerals & Fossils
Lapidary
Help regarding copper laps and other questions
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<blockquote data-quote="Lefty" data-source="post: 349886" data-attributes="member: 2976"><p>Unless the stream-worn piece of topaz is completely flawless, you can often discern the cleavage direction if you examine it really closely. If you have some refractol, coat the stone with that or aniseed oil or even baby oil can help make a clearer view into the rough. Check for any little cracks - if you see two or more cracks/flaws that are dead straight and running perfectly parallel to one another, that's the direction of the cleavage plane. Sometimes there might be one or two tiny, bright, shiny flat faces on the surface of an otherwise irregular stone that help give it away as well.</p><p></p><p>Cheers</p></blockquote><p></p>
[QUOTE="Lefty, post: 349886, member: 2976"] Unless the stream-worn piece of topaz is completely flawless, you can often discern the cleavage direction if you examine it really closely. If you have some refractol, coat the stone with that or aniseed oil or even baby oil can help make a clearer view into the rough. Check for any little cracks - if you see two or more cracks/flaws that are dead straight and running perfectly parallel to one another, that's the direction of the cleavage plane. Sometimes there might be one or two tiny, bright, shiny flat faces on the surface of an otherwise irregular stone that help give it away as well. Cheers [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Help regarding copper laps and other questions
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