HPHT treatment
Application of high pressure and temperature to an existing diamond to alter specified optical or structural properties, most commonly color.
How the Croatian edition writes this term
- Level
- Croatian professional usage
- Form
- HPHT tretman
Related chapters of The Book
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.
Primary internal terminology and context source across 105 chapters.
International nomenclature and grading framework.
CIBJODiamond Terminology GuidelineConsumer-facing distinction among diamond, laboratory-grown/synthetic diamond and simulants.
CIBJOLaboratory-Grown Diamond GuidelinesDisclosure and business terminology for laboratory-grown diamonds.
ISOISO 18323:2015 — Jewellery — Consumer confidence in the diamond industryPermitted descriptors and definitions for diamond-industry consumer terminology.