A registered rough diamond trader is required to report immediately to the Trade and Industry Department in writing any change in the registration particulars declared in the registration form or any change in the status of business.

A registered rough diamond trader who carries on a business of importing, exporting, buying or selling (not including carrying) rough diamonds is further required to keep for five years an accurate and up-to-date record of his daily import, export, purchase and sale of rough diamonds from the day on which it is made with the following details:

1. the name of each person from or to whom the trader buys or sells the rough diamonds and (if that person is also a registered rough diamond trader) that person's registration number;
2. the amount and value of rough diamonds imported, exported, bought or sold; and

3. such other particulars as the Director-General of Trade and Industry may require.

All registered rough traders may also be required to lodge such returns or notifications relating to the import, export, purchase and sale of rough diamonds as the Director-General of Trade and Industry may require.

Authorized officers of the Customs and Excise Department may conduct inspection at the premises of the registered rough diamond trader to ensure that the registration particulars are valid and books and records are properly kept.