Nuummite Ovale 14x10x5mm Perles 1 fil (environ 38cm)
Nuummite / Astrophyllite, Ovale
Taille : Environ 14x10x5mm (+/-0.5mm)
Taille du trou : Environ 1mm
Couleur : Noir
Il s'agit d'une belle pierre naturelle, Nuummite (Nuummite-Astrophyllite), de couleur noire et de lustre vitreux. Selon un gemmologue, c'est une pierre mixte composée de plusieurs minéraux. Les résultats d'une évaluation séparée pour une forme différente ont répertorié trois minéraux principaux : "Anthophyllite", "Quartz" et "Staurolite". Il est très rare qu'un résultat d'évaluation liste trois noms pour un seul minéral. De plus, le gemmologue a mentionné qu'elle contient également des éléments de Grenat. Avec une base noire, cette pierre est riche en couleurs, incluant des zones transparentes de quartz, des sections marron et grises d'autres minéraux, une brillance linéaire de type Pietersite, et des inclusions dorées.
[*La grille utilisée dans l'image est de 1cm x 1cm.]
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