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A geological expedition in the palm of your hand! Each of these fun, low-priced excavation blocks contains one real mineral or fossil specimen. The kits are blind-packed, so its a surprise which of the specimens you will get. Use the included chisel tool to dig in and reveal one of 12 different minerals or fossils: amethyst, aventurine, quartz, rose quartz, red jasper, pyrite, pisolite, snowflake obsidian, ammonoidea, scleractinia, petrified wood, or crinoids. Ideal for geology enthusiasts, these mini excavation kits are great for starting a new rock collection (or adding to an existing one!).