Crystals & Stones

Rough Welo Ethiopian opal; photo by Dpulitzer, CC BY-SA 4.0 — Roosters Peacock crystal guide
Ethiopian Opal: The Stone of Creativity, Reflection & Shifting Perspective
Ethiopian Opal is hydrous amorphous silica, SiO2·nH2O, and much Welo material is hydrophane, meaning it can absorb water and temporarily change appearance. Explore its mineral science, modern Ethiopian source history,... Read more...