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<p>[QUOTE=&quot;Ce BCA, post: 4233757, member: 18716&quot;]Agate is a form of quartz, but depending on type/composition/cut/polish can test quite low on a presidium meter, so they could be given the reading.&nbsp; As they are relatively transparent they are on the boundary of agate/carnelian.&nbsp; The crackle is unusual, looks as if they had been deliberately quench crackled.</p><p><br /></p><p>Edit: Many polished stones don&#039;t give a reading on a presidium meter, so they are not necessarily glass, although in this case I think you are right (on the green ones).[/QUOTE]</p><p><br /></p>

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