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Create a brilliant underwater crystals with this kit! Place your colored stones (metal salt crystals) into the magic solution (sodium silicate dissolved in water) and watch them grow into colorful crystal formations. In six hours, repeat these steps and watch with amazement as your rocks expand into colorful stalagmite-like towers. Each set includes a sticker sheet.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
$13.00