Grandview Mine Coconino Co Arizona Physical and optical properties at a glanceChemical formula Cu₄Al₂(SO₄)(OH)₁₂·2H₂OCrystal system OrthorhombicCrystal habit Acicular, radial, tufted, velvetyColor Sky-blue to azure-blueStreak Pale blueLuster SilkyMohs hardness 1–3 (can be scratched by a fingernail)Specific gravity 2.74–2.95Refractive indices nα = 1.588–1.591; nβ = 1.617–1.620; nγ = 1.654–1.655Diaphaneity Transparent to translucentCleavage Good in one directionFracture UnevenPleochroism X = colorless; Y = pale blue; Z = bright blue Beyond its scientific resume, modern crystal enthusiasts credit cyanotrichite with a vibrant spiritual signature. Practitioners assign the mineral to the throat and third-eye chakras, suggesting it sharpens honest self-expression, aids lucid dreaming, and helps leaders articulate clear visions without hidden agendas. The stone’s reported vibration of 6 is believed to sync with Aries energy, promoting decisive action and new beginnings. While these traits remain in the realm of personal belief, anecdotal reports from meditation circles often mention a gentle “electric” tingle when the velvety fibers are placed on the skin.