| August |
| Treasures of the Earth | Santa Cruz Civic Auditorium, Santa Cruz, California, United States | Sat 1st - Sun 2nd Aug 1970 |
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| 2nd Annual International Mineral and Gem Show | Harold Harvey Arena, Kingston, Ontario, Canada | Sat 1st - Sun 2nd Aug 1970 |
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| Annual Show, Gem and Mineral Fair | Boone County Fairgrounds, Belvidere, Illinois, United States | Sat 1st - Sun 2nd Aug 1970 |
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| 8th Annual Rock and Mineral Show | Skyline Park, Owego, Tioga Center, New York, United States | Sat 1st - Sun 2nd Aug 1970 |
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| 2nd Rock Show Gemboree | Lakeland Union High School, Minocqua, Wisconsin, United States | Sat 1st - Sun 2nd Aug 1970 |
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| 6th Annual Show | Jefferson County Fairgrounds, Port Townsend, Washington, United States | Fri 7th - Sun 9th Aug 1970 |
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| 6th Annual Gem and Mineral Show | 211 Rambler Rd, Winthrop, Maine, United States | Sat 8th Aug 1970 |
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| 5th Annual Show | 41090 Big Bear Blvd, Big Bear Lake, California, United States | Sat 8th - Sun 9th Aug 1970 |
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| 8th Annual Gem and Mineral Show | Bloomer High School, Bloomer, Wisconsin, United States | Sat 8th - Sun 9th Aug 1970 |
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| Annual Show | National Guard Armory, Emmett, Idaho, United States | Wed 12th - Sat 15th Aug 1970 |
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| 20th Annual Eastern Federation gem and Mineral Show | Americas Mart, Atlanta, Georgia, United States | Thu 13th - Sat 15th Aug 1970 |
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| Show | Mason County Fairgrounds, Shelton, Washington, United States | Fri 14th - Sun 16th Aug 1970 |
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| 17th Annual Show. Fantasy in rock | Hall of Flowers, Golden Gate Park, San Francisco, California, United States | Sat 15th - Sun 16th Aug 1970 |
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| 9th Annual Show | Crawford City Park Pavillion, Rye Brook, New York, United States | Sat 15th - Sun 16th Aug 1970 |
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| Annual Gem and Mineral Festival | Mount Sunapee State Park, Newbury, New Hampshire, United States | Sat 15th - Sun 16th Aug 1970 |
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| 9th Annual Gem and Mineral Show | Perry Highway Hose Co. Fire Hall, Erie, Pennsylvania, United States | Sat 15th - Sun 16th Aug 1970 |
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| 3rd Annual Show | Webster High School, Webster, Wisconsin, United States | Sat 15th - Sun 16th Aug 1970 |
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| 10th Annual Show | Kingwood Center, Mansfield, Ohio, United States | Sat 15th - Sun 23rd Aug 1970 |
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| Annual Rogue Gem and Mineral Show | Josephine County Fairground Pavillion, Grants Pass, Oregon, United States | Wed 19th - Sat 22nd Aug 1970 |
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| Annual Chehalis Valley Gem Club | Grays Harbor County Fairgrounds, Elma, Washington, United States | Thu 20th - Sun 23rd Aug 1970 |
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| Birmingham Lapidary Guild Independent Show | Western Hills Mall, Fairfield, Alabama, United States | Thu 20th - Sat 22nd Aug 1970 |
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| Clallam County Gem and Mineral Society Annual Show | Clallam County Fairgrounds, Port Angeles, Washington, United States | Fri 21st - Sun 23rd Aug 1970 |
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| Chesapeake Showcase 70 | United Steelworkers Union Hall, Baltimore, Maryland, United States | Fri 21st - Sun 23rd Aug 1970 |
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| Annual Gem and Mineral Show | Gouvenor Fairgrounds, Gouverneur, New York, United States | Sat 22nd - Sun 23rd Aug 1970 |
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| Kings Stonecrafters Annual Show | Kings Mall Shopping Center, Hanford, California, United States | Thu 27th - Sat 29th Aug 1970 |
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| Mitchell Rock and Gem Club Annual Show | Sanford Hall County Fairgrounds, Mitchell, Nebraska, United States | Thu 27th - Sat 29th Aug 1970 |
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| Yellowstone Agate Club Annual Show | Eastern Montana Fairgrounds, Miles City, Montana, United States | Sat 29th - Sun 30th Aug 1970 |
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| September |
| 30th Annual Northwest Federation Convention and Show | State Fairgrounds, Great Falls, Montana, United States | Sat 5th - Mon 7th Sep 1970 |
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| 5th Annual Hancock Gem Show | Hancock County Fairgrounds, Findlay, Ohio, United States | Sat 12th - Sun 13th Sep 1970 |
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| 16th Annual Seattle Regional Gem and Mineral Show | Exhibition Hall, Seattle, Washington, United States | Sat 19th - Sun 20th Sep 1970 |
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| 7th Annual Mother Lode Mineralites Gem Show | Gold Country Fairgrounds, Auburn, California, United States | Sat 26th - Sun 27th Sep 1970 |
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| 9th Annual Michigan Rock and Gem Show | Christ the King School, South Bend, Indiana, United States | Sat 26th - Sun 27th Sep 1970 |
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| 9th Annual Michigan Rock and Gem Show | Christ the King School, South Bend, Indiana, United States | Sat 26th - Sun 27th Sep 1970 |
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| October |
| 6th Annual Sierra Rockhound Roundup and Show | Mother Lode, Sonora, California, United States | Sat 3rd - Sun 4th Oct 1970 |
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| Long Beach Gem and Mineral Show | Wardlow Park, Long Beach, California, United States | Sat 3rd - Sun 4th Oct 1970 |
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| Gemarama'70 | Agricultural Hall, Allentown, Pennsylvania, United States | Sat 17th - Sun 18th Oct 1970 |
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| 21st Annual Whittier Gem & Mineral Show | Palm Park Youth Center, Whittier, California, United States | Sat 17th - Sun 18th Oct 1970 |
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| 26th Annual Greater Detroit Gem and Mineral Show | Detroit Light Guard Armory, Detroit, Michigan, United States | Fri 23rd - Sun 25th Oct 1970 |
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| Gold Cup "Blue Ribbon Classic" Gem and Mineral Show | New International Hotel, Las Vegas, Nevada, United States | Fri 23rd - Sun 25th Oct 1970 |
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| 8th Annual Rockhound Gemboree | Scottish Rite Center, San Diego, California, United States | Sat 24th - Sun 25th Oct 1970 |
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| Annual Grant Geological Annual Gem Show | 4-H Fairground, Marion, Ohio, United States | Sat 24th - Sun 25th Oct 1970 |
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| 7th Annual Atlantic Coast Gem and Mineral Exhibition | Pikesville Armory, Pikesville, Maryland, United States | Sat 24th - Sun 25th Oct 1970 |
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| Oakland International Jewelery and Minerals Show | New Coliseum, Oakland, California, United States | Fri 30th Oct - Sun 1st Nov 1970 |
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| November |
| International Jewelry and Minerals Show | Flamingo Hotel, Las Vegas, Nevada, United States | Sun 8th - Tue 10th Nov 1970 |
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