Esdomera Nieuws: Ringen en Sieraden — Nieuwe Collecties & Matchende Sets

Alexandrite Ring: What Makes It Change Color and Why It's So Rare
Alexandrite is a variety of chrysoberyl (BeAl₂O₄) with one critical addition: chromium ions (Cr³⁺) trapped inside the crystal lattice during formation. Chromium absorbs strongly in the yellow part of the visible spectrum — essentially blocking yellow light from passing through. What's left...
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