CRAYOLA-Crystal Effects Window Markers. Decorate windows; glass; mirrors; mylar; and more. The colors crystallize as they dry. This package contains eight crystalizing colors: orange frost; lemon ice; green glacier; blue diamond; cracklin' rose; pink snowflake; crystal clear and cocoa quartz. Non-toxic; conforms to ASTM D4236. WARNING: CHOKING HAZARD: Small parts. Not for children under 3 years. Made in USA.