6. Pearl creation method (i.e., natural, cultured, simulated/imitation, or seed pearl) must be completely and fully disclosed on the product detail page. Independent verification of creation method may be required. A natural pearl is a pearl whose creation has in no way been caused or induced by humans. A cultured pearl is created when a nucleus is planted by humans inside the shell or in the mantle of a mollusk coated with nacre by the mollusk. A simulated or imitation pearl is a manufactured product that simulates a pearl or cultured pearl in appearance. A seed pearl is a small pearl that measures approximately two millimeters or less.