The Ghost Crystals 100 g amazes students! A vial appears to contain only water and a hanging string. When the string is lifted, a large crystal is found on the string. When the string is lowered into the water, the crystal turns invisible!
A vial appears to contain only water and a small string hanging down into it. When the string is lifted out, a large shiny crystal is found to be tied up in the string. When the string is lowered back into the water, the crystal again becomes invisible! Instructions included.
1-800-452-1261
Ghost Crystals, G0050 and G0052
Ghost Crystals