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The 2011 Tucson gem and mineral shows saw better-than-expected sales, attributed to a need to restock inventories and an improved economic outlook. Notable finds included Vietnamese spinel, rare väyrynenite, and newly mined green grossular from Tanzania, showcasing impressive transparency and color. The event also highlighted various gemological phenomena, such as spectral interference in quartz and the introduction of faceted cavansite.

Author

vivi1116c

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EN