Records of transactions shall be maintained by the buyer in gold, silver, or platinum for a period of one year and shall be available for inspection by any law enforcement official of the federal government, state, municipality, or county. No buyer shall accept any premelted gold, silver, or platinum, unless it is part of the design of an item of jewelry. Each item of gold, silver, or platinum purchased by a buyer in gold, silver, or platinum shall be retained in an unaltered condition for ten full days that the buyer is open to the public. It shall be the buyer's duty to inform law enforcement if the buyer has any reason to believe an item purchased may have been obtained illegally by a seller.
§ 407.292, RSMo