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BOTTOM-CORNER FACET [1 record]

Record 1 2007-01-19

English

Subject field(s)
  • Gemmology
  • Diamond Industry
OBS

Corners: The first 4 facets on the pavilion and the crown of a polished diamond; these facets are indexed at 90° to one another and form part of the main facets.

OBS

Crossworkers: establish the mains, crown and pavilion facets to specific angles and indices in two steps: 1. blocking the diamond by: establishing the initial 17 main facets, including the: - table; - 8 pavilion mains, to specific angles and indices: 4 corners; 4 pavilions; - 8 crown mains, to specific angles and indices: 4 corners; 4 bezels. 2. lapping the diamond ...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
OBS

Coin : Nom donné aux quatre facettes résultant de la taille en croix de la couronne ou de la culasse.

Spanish

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