Glowing Crystal Geode

Thames & Kosmos


  • Glowing Crystal Geode
  • Glowing Crystal Geode

This product is currently sold out.

Create your own crystal geode — a round rock containing a crystal-filled cavity. First, cast a plaster geode shell in the mold and then fill it with a crystal-growing alum salt solution. The crystal solution contains an ultraviolet-luminous pigment that gets incorporated into the crystals as they form, resulting in a geode that glows in ultraviolet light. An ultraviolet flashlight with holder, as well as a display stand for the geode, are included. Display your beautiful specimen day and night! Learn about how crystals form and why the pigment glows under ultraviolet light.

  • 12 Years and Up
  • 8 - 11 Years

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