Amazonite vs Copper

Property Amazonite Copper
Formula KAlSi3O8 Cu
Crystal System Triclinic Cubic (Isometric)
Mineral Class 09 Silicates 01 Native Elements
Mohs Hardness 6.0-6.5 2.5-3.0
Color Green, blue-green Copper-red, tarnishes to brown/green
Luster Vitreous Metallic
Streak White Copper-red
Transparency Translucent Opaque
Cleavage Perfect {001}, good {010} None
Fracture Conchoidal to uneven Hackly

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