Amber
(am'-bar)
13th c.; old fren. ambre; med. lat., ambar, ambra; from arabic anbar
Organic fossil resin with electrical properties used as a gemstone.
Color
Pale yellow to dark brown to red, some green also
Chemical composition
varying greatly , mainly C40H64O4
Hardness (Mohs scale)
2 - 2,5
Specific gravity
1,07 ±0,03
Refractive index
1,54 ±0,04
Optical character
Amorphous