{"product_id":"nachtleuchtender-kristall-schatz","title":"Glow-in-the-Dark Crystal Treasure","description":"Sparkling crystals that glow in the dark: With this KOSMOS experiment kit, children aged ten and up can grow their own glow-in-the-dark crystal treasure. It's easy and particularly reliable to use: Once the alum crystal solution is mixed, it's poured into the specially designed treasure chest, and after just a few hours, you can watch the crystal treasure grow. The special bottom insert of the chest makes the transparent crystals glow mystically in the dark. This turns every child's room into a mysterious treasure chamber!\u003cbr\u003e\u003cbr\u003eContents: 2 sachets of potassium aluminum sulfate (alum) 20 g, glow-in-the-dark crystal base, measuring cup, wooden spatula, treasure chest, colorfully illustrated instructions\u003cbr\u003e\u003cbr\u003eAdditional materials required: Water, empty clean jam jar, kettle or pot, oven mitts and pot holders, waterproof felt-tip pen, tweezers, thin sewing thread, scissors, small screwdriver\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eManufacturer \/ Responsible Person:\u003cbr\u003eFranckh-Kosmos Verlags-GmbH \u0026amp; Co. KG, Pfizerstrasse 5-7, 70184, Stuttgart, Germany, kosmos.de\/servicecenter","brand":"KOSMOS","offers":[{"title":"Default Title","offer_id":53214122017101,"sku":"64568","price":11.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/5980\/8589\/files\/4002051645687.png?v=1781698065","url":"https:\/\/www.kosmos.de\/en\/products\/nachtleuchtender-kristall-schatz","provider":"KOSMOS Verlag","version":"1.0","type":"link"}