Alexandrite synthétique AAA, pierre libre, ronde à facettes, 6x6mm, 1 pièce
Taille : environ 1,08 carats
Dimensions : environ 6x6x3,5-4,5mm
Non percé / pierre non montée
Couleur : Bleu vert
Il s'agit d'une alexandrite synthétique taillée en rond. 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 distinctive est son changement de couleur spectaculaire. Sous la lumière naturelle, elle affiche un bleu-vert profond, tandis que sous la lumière incandescente, elle se transforme vivement en un violet rougeâtre (la 3ème image a été prise avec une lumière incandescente, et la 4ème image avec une lumière noire (longueur d'onde de pointe 395nm)). En tant que pierre non montée pour la joaillerie, sa transparence et sa couleur sont impeccables. Comme elle est non percée, elle est idéale pour les montures et autres traitements. Une autre taille a été identifiée, et le résultat est "Alexandrite synthétique".
[*La grille utilisée dans l'image est de 1cm x 1cm.]
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