HSC §25214.3.1: (a) A manufacturer or supplier of jewelry that is sold, offered for sale, or offered for promotional purposes shall prepare and, at the request of the department, submit to the department no more than

(a) A manufacturer or supplier of jewelry that is sold, offered for sale, or offered for promotional purposes shall prepare and, at the request of the department, submit to the department no more than 28 days after the date of the request, technical documentation or other information showing that the jewelry is in compliance with the requirements of this article. (b) A manufacturer or supplier of jewelry that is sold, offered for sale, or offered for promotional purposes shall prepare a certification. This certification shall attest that the jewelry does not contain a level of lead or cadmium that prohibits the jewelry from being sold or offered for sale pursuant to this article and shall do all of the following: (1) Identify the jewelry covered by the certificate, including a description of the jewelry that is sufficiently detailed to match the certificate to each product covered by the certificate and that could not be used to describe any jewelry that is not covered by the certificate. (2) Cite to each separate rule or standard for which the jewelry is being certified. (3) Identify the manufacturer or supplier certifying compliance of the jewelry, including the name, full mailing address, and telephone number of the manufacturer or supplier. (4) Include the contact information for the person maintaining records of the test results of jewelry tested for purposes of this article, including the name, full mailing address, email address, and telephone number of that person. (5) Include the date on which the jewelry was manufactured, including at least the month and year. (6) Include the location where the jewelry was manufactured, including at least the city or administrative region, state, if applicable, and country where the product was manufactured or finally assembled. If the same manufacturer operates more than one location in the same city, the street address of the factory shall be included. (7) Include the date or dates on which, and the location or locations where, the jewelry was tested for purposes of certification. (8) Identify any third-party laboratory that performed the testing for purposes of certification, including the name, full mailing address, and telephone number of the laboratory. (c) A manufacturer or supplier of jewelry sold or offered for promotional purposes in this state shall do either of the following: (1) Provide the certification required by subdivision (b) to a person who sells or offers for sale that manufacturer’s or supplier’s jewelry. (2) Display the certification required by subdivision (b) prominently on the shipping container or on the packaging of jewelry.