Alexandrite synthétique AAA, pierre libre, facettée ronde 5x5mm, 1 pièce
Autres Pierres, non percées (sans trou)
1 pièce : environ 0,61 caratsTaille : environ 5x5x2,5-3 mm (+/-0,5 mm)
Non percé (pierre libre)
Couleur : Bleu-vert
Il s'agit d'une alexandrite synthétique ronde facettée. Elle a été créée en utilisant la "méthode Czochralski" (méthode de tirage de cristal), qui applique la technologie des semi-conducteurs pour faire croître des monocristaux ultra-purs. Sa caractéristique la plus significative est son changement de couleur spectaculaire. Sous la lumière naturelle, elle affiche un bleu-vert profond, et sous la lumière incandescente, elle se transforme vivement en un violet-rougeâtre (la 3ème image a été prise sous lumière incandescente, et la 4ème image sous lumière noire (longueur d'onde de pointe 395nm)). En tant que pierre libre pour bijoux, sa transparence et sa couleur sont impeccables. Comme elle n'est pas percée, elle est idéale pour les sertissages et autres traitements. Une autre taille a été identifiée, et le résultat est "Alexandrite Synthétique".
Les couleurs et les tailles seront mélangées lors de l'expédition.
[*La grille utilisée dans l'image est de 1cm x 1cm.]
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