Crystal medals are allowed on airplanes, primarily small crystal ornaments, and the specific rules apply. Here are some relevant guidelines:
Non-Prohibited Items: According to the Civil Aviation Administration of China, crystal is not considered a prohibited or dangerous item, so theoretically it is allowed on board.
Size Restrictions: While crystal is permitted on airplanes, there are size restrictions. Generally, only small crystal ornaments are allowed. Larger crystal pieces cannot be carried on and may require check-in.
Local Regulations: When bringing crystal on a plane, local regulations and rules must be considered. Different airports or airlines may have different regulations; it is recommended to check the relevant rules before departure.