TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MASTER DIAMOND [1 record]

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Record 1 2004-12-06

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A set of rough or polished diamonds of known bodycolour to which other diamonds are compared to judge their colour grade.

CONT

Master diamonds typically range from colorless through gradually deepening tints of yellow and brown.

CONT

Probably the best way to learn to color grade is to ask your jeweler to show you how. He or she will have some loose diamonds, a paper or plastic white grading tray, possibly a set of graded comparison diamonds called master stones and a good diffused (not bare) light source such as a neutral fluorescent light.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Jeu de diamants bruts ou taillés dont la couleur est connue, utilisé pour classer d'autres diamants selon leur couleur.

CONT

Il ne fait aucun doute que la meilleure façon d'apprendre à déterminer la couleur consiste à demander à votre bijoutier de vous l'enseigner. Pour ce faire, il aura probablement à sa disposition : des diamants non montés; un support de papier ou de plastique de couleur blanche; un ensemble de pierres-étalons (diamants de comparaison dont la couleur est connue) et une bonne source lumineuse (fluorescente) qui produit une lumière neutre et diffuse.

Key term(s)
  • pierre étalon

Spanish

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