This is the preview post #20 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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Mexican opal is very beautiful and we have a small collection of pieces here for this preview.

Just 2 days left… Hope to see you!