is qualified by a clear and conspicuous disclosure (for example, the words “laboratory-created,” “laboratory-grown,” “[manufacturer name]-created,” or some other word or phrase of like meaning) conveying that the product is not a mined stone. Note to Paragraph (c): Additional guidance about imitation and laboratory-created diamond

have been given at the date such article was shipped or delivered, or caused to be shipped or delivered, by the person who gives the guaranty of undertaking. (b) The following are suggested forms of guaranty or undertaking referred to in section 5(b)(2) of the act. (1) Limited form for use on invoice or bill of sale.

be preserved for a period of three years from the date the tests were performed, or in the case of paragraph (c) of this section the guaranties were furnished. (e) Any person furnishing a guaranty under section 8(a) of the act who neglects or refuses to maintain and preserve the records prescribed in this section shall be deemed to have furnished a false guaranty under the provisions of section 8(b) of the act.

prior to initiation of the test; or (iii) Provisions of the railroad's operating rules, timetable or other mandatory directives the violations of which by engineers were cited by the railroad as the cause of train accidents or train incidents in accident reports filed in compliance with part 225 of this chapter for the preceding year; (2) Be conducted that so that the administration of these tests is effectively distributed