There is no limit to the amount of physical currency/Bearer Negotiable Instruments/ precious stones and metals including gold, diamond and jewellery or any goods of high value including work of arts exceeding Rs 500,000 in value that may be brought into or taken out of Mauritius.
Is US Dollar accepted in Mauritius?
US Dollar is widely accepted in Mauritius, so you can carry those as well. If you can't get your money exchanged at the airport, don't worry. The island is dotted with numerous banks, including Bank of Baroda, Barclays Bank, Deutsche Bank, HSBC Bank, and Standard Chartered Bank.