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Chemical composition Fossilized, semi-fossilized resin
Crystal system Amorphous
Habit None, Amorphous
Cleavage None
Fracture Uneven-Conchoidal
Hardness 2
Refractive index 1.540 (-0.010)
Specific gravity 1.06 (+.04,-.03)
Lustre Resinous
Seperations Amber:Copal is rapidly attacked with acetone (2-3 seconds) whereas ambr is usually not effected or just slightly attacked in the same period of time