HARDNESS: 2 - 2.5
DENSITY: 1.10 g / cm3
COLOR: Yellow to red
EXFOLIATION- FRACTURE: Conchoidal
INDEX OF REFRACTION: 1.54
TRANSPARENCY: Transparent to translucent
Fossilised resin from conifers, yellow, brown and red. It has occasionally insects, plant debris and bubbles icluded. It can be treated with oil to remove bubbles. It is electrified when rubbed with a cloth. In contact with chemicals may deteriorate.