This is the preview post #16 for the 2026 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2026 will be held on March 21th and 22nd at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.

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A the rarer side, we have a nice Calamostachys cone for preview #16. Calamostachys was one of the cones of Calamites (see Mazon Monday #99).

Less than 6 days left until the show… how quickly time flies!