Code of Federal Regulations · Section
§ 23.17 — Misuse Of The Words “brilliant” And “full Cut.”
16 C.F.R. § 23.17
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It is unfair or deceptive to use the unqualified expressions “brilliant,” “brilliant cut,” or “full cut” to describe, identify, or refer to any diamond except a round diamond that has at least thirty-two (32) facets plus the table above the girdle and at least twenty-four (24) facets below.