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The mineral science booklet caught my eye, but honestly the ombre layering technique in the molds was the real win—my first geode soap came out looking like a tiny stained-glass window. My kid and I both got sucked into the hands-on part, and it's a solid way to spend a rainy afternoon.

The ombre geode molds turned out way prettier than the photos suggested, and watching the colors layer as the soap set was genuinely fun. My kids fought over who got to pour the next color, so I’d call that a win for a rainy afternoon.

I wasn’t expecting the crystal shapes to come out this glossy and rich — the ombre layering instructions were clear enough that even my first batch looked like a store-bought geode. The mineral science tie-in kept me reading while the soap cured, which is way more than I can say for other kits I’ve