Amber

Amber is fossilized tree resin (not sap), which has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects. Amber is used as an ingredient in perfumes, as a healing agent in folk medicine, and as jewelry.

Color Midway between the color gold and orange
Mohs scale hardness Falls between 2 and 2.5
Specific gravity 1.05 to 1.09
Refractive index 1.495 - 1.9