Chapter I: FEDERAL TRADE COMMISSION
Subchapter B: Guides and trade practice rules
Part 23: Guides for the jewelry, precious metals, and pewter industries
16 CFR 23.25 - Misuse of the word “gem.”
16 CFR 23.26 - Misuse of the words “flawless,” “perfect,” etc.
16 CFR 23.3 - Misuse of the terms “hand-made,” “hand-polished,” etc.
16 CFR 23.4 - Misrepresentation as to gold content.
16 CFR 23.5 - Misuse of the word “vermeil.”
16 CFR 23.6 - Misrepresentation as to silver content.
16 CFR 23.8 - Misrepresentation as to content of pewter.
16 CFR 23.9 - Additional guidance for the use of quality marks.
Part 233: Guides against deceptive pricing
16 CFR 233.1 - Former price comparisons.
16 CFR 233.2 - Retail price comparisons; comparable value comparisons.
16 CFR 233.4 - Bargain offers based upon the purchase of other merchandise.
16 CFR 233.5 - Miscellaneous price comparisons.
Part 238: Guides against bait advertising
16 CFR 238.0 - Bait advertising defined. 1
16 CFR 238.1 - Bait advertisement.
16 CFR 238.3 - Discouragement of purchase of advertised merchandise.
16 CFR 238.4 - Switch after sale.
Part 239: Guides for the advertising of warranties and guarantees
16 CFR 239.1 - Purpose and scope of the guides.
16 CFR 239.2 - Disclosures in warranty or guarantee advertising.
16 CFR 239.4 - “Lifetime” and similar representations.
16 CFR 239.5 - Performance of warranties or guarantees.
Part 24: Guides for select leather and imitation leather products
16 CFR 24.0 - Scope and purpose of guides.
16 CFR 24.1 - Deception (general).
16 CFR 24.2 - Deception as to composition.

