Template:Ammolite

From The Gemology Project
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Ammolite
Chemical composition CaC03 with trace elements
Crystal system Orthorhombic
Habit edit me
Cleavage edit me
Fracture edit me
Hardness 4.5
Optic nature edit me
Refraction index 1.52-1.68
Birefringence edit me
Dispersion edit me
Specific gravity 2.60 - 2.85
Lustre vitreous to resinous
Pleochroism edit me