Crystals & Stones

Glaucophane specimen from USGS mineral collection; public domain — Roosters Peacock crystal guide
Glaucophane: The Stone of Adaptation, Perspective & Quiet Strength
Glaucophane is a blue-to-lavender sodium amphibole characteristic of high-pressure, low-temperature blueschist metamorphism in subduction settings; intact specimens should be kept dust-free and never ground or sanded. Explore its mineral science,... Read more...