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<p>[QUOTE=&quot;2manybooks, post: 431482, member: 8267&quot;]Now that you all have settled on glass, I have one more hypothesis. What about a small stalagmite? The shape looks like something dripped and accumulated slowly. The process could include air bubbles, and create something clear and very smooth on the outside.</p><p>But maybe not - I have been looking for comparable photos of stalagmites but can&#039;t find anything quite right.[/QUOTE]</p><p><br /></p>

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