| August |
| 37th Annual Ishpeming Gem and Mineral Show | Ishpeming Elks Club, Ishpeming, Michigan, United States | Sat 4th Aug 2012 |
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| 58th annual gem & mineral show & sale | Treasure Island Administration Building 1, San Francisco, California, United States | Sat 4th - Sun 5th Aug 2012 |
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| Kempton Park Rock 'n' Gem August Show | Kempton Park Racecourse, Sunbury on Thames, Middlesex, United Kingdom | Sat 4th - Sun 5th Aug 2012 |
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| East Coast Gem, Mineral & Fossil Show | Eastern States Exposition Center, West Springfield, Massachusetts, United States | Fri 10th - Sun 12th Aug 2012 |
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| Welsh Rock 'n' Gem August Show | Royal Welsh Showground, Builth Wells, Powys, United Kingdom | Sat 11th - Sun 12th Aug 2012 |
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| Shelton Rock and Mineral Soc. 3rd Annual Tailgate Rock Sale and Swap Meet | Shelton S Mason Soccer Park , Shelton, Washington, United States | Sat 18th Aug 2012 |
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| Dallas Mineral Collecting Symposium | Cox School of Business, Southern Methodist University, Dallas, Texas, United States | Sat 25th Aug 2012 |
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