callistodesigns on eBay is offering up to 40% off mineral specimens, meteorites, and fossils, with prices generally ranging from around $6 to $9. The selection spans crystal clusters like amethyst and azurite, meteorite pieces such as Campo del Cielo and Chelyabinsk stone, and fossils including trilobite and ammonite specimens. Most listings include a display case and identification card. Shop Now at eBay