Accueil > Term: color grade
color grade
The grade or classification into which a gem is placed by examination of its color in comparison to the color of other gems of the same variety.
- Partie du discours : noun
- Secteur d’activité/Domaine : Mines
- Catégorie : Exploitation minière; Mineral mining
- Government Agency: USBM
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Créateur
- ed.young
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(V.I.P) 21084 points - 100% positive feedback
(Milwaukee, United States)
