4Cs and grading
Blemish
An external characteristic on the surface of a polished diamond that enters clarity and/or finish interpretation depending on its type and the grading system.
PreferredStable2 chapters
TERM USAGE
How this term is used on the platform
- Synonyms / variants
- surface characteristic
- Editorial note
- Do not equate a blemish with an inclusion, which is an internal or partly internal characteristic.
FORM IN THE CROATIAN EDITION
How the Croatian edition writes this term
- Level
- Croatian professional usage
- Form
- vanjska značajka (blemish)
- Awaiting standard
- Pending the Croatian text of HRN EN ISO 24016:2026.
RELATED TERMS
Terminology network
FULL CONTEXT
Related chapters of The Book
TERMINOLOGY BASIS
Sources and authorities
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.
House of KacinariDiamonds: The Book
GIAGIA 4Cs / Diamond Quality FactorsPrimary internal terminology and context source across 105 chapters.
Widely used definitions for color, clarity, cut, carat and optical appearance terms.