Can you bring sand through customs, and if so, what are the regulations and restrictions surrounding its transportation"?

Yes, you can bring sand through customs, but there are regulations and restrictions to consider. It is important to check the specific rules of the country you are traveling to, as some places may have restrictions on bringing in sand due to environmental concerns or potential threats to agriculture. It is recommended to declare the sand at customs and be prepared to provide information about its origin and intended use.