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.