Kyanite 2 stud earrings / new- 0.64 g - (2)

Two kyanite stud earrings / new Set in 925. Sterling silver Total weight: 0.64 g / 3.2 ct 4.0 mm x 4.0 mm x 14.4 mm New and unworn Kyanite, also called cyanite, disthen or sapphirite, is a mineral from the class of silicates and germanates. It crystallizes in the triclinic crystal system with the chemical composition Al2[O|SiO4], so chemically it is an aluminum silicate. Structurally it belongs to the island silicates. Kyanite predominantly develops prismatic to tabular crystals with a glassy luster on the surfaces, but it also occurs in fibrous or granular to massive mineral aggregates. In pure form, kyanite is colorless and transparent. Due to multiple refractions of light caused by lattice defects or polycrystalline structure, it can appear white and, through trace impurities, take on light- to dark-blue, blue-violet, greenish, brownish, and rarely reddish colors, with transparency decreasing accordingly. Shipping as insured letter

Schätzpreis:€2

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