Thames and Kosmos – Glowing Crystal Geode


In stock

Product Code: 550022 Category: Tag:


Create your own crystal geode — a round rock containing a crystal-filled cavity.

First, cast a plaster geode shell in the mould 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.

Additional information

Weight 680 g
Dimensions 22 × 28 cm