Primary internal terminology and context source across 105 chapters.
HOK-DIA-TERM-253 · Cutting and anatomy
Old European cut
A historical family of round brilliant-style cuts predating modern round-brilliant standardization and typically showing different proportions and facet patterns.
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- Editorial note
- The historical category includes variation; it is not one universal geometry.
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The records below form the terminology basis for this entry or its category. This does not mean that every source defines every word on this page. The canonical manuscript remains the primary contextual source, while each external standard, laboratory policy, or regulatory guideline applies only within its own scope.
Widely used definitions for color, clarity, cut, carat and optical appearance terms.
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