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Title: Tucson Gem and Mineral Show Every Year - PowerPoint PPT Presentation
Description: Every year for about 2 1/2 weeks in January and February — the rock, gem, mineral, and jewelry worlds cosmically align in Tucson as Tucson gem and mineral show. Researchers, gemologists, authors, artists, miners, and trade companies gather from every continent to share their treasures, knowledge, and expertise. – PowerPoint PPT presentation
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