Material	Conductivity, σ (S/m)		Material	Conductivity,σ (S/m)
Silver	6.2 x 107		Pure germanium	2.2
Copper	5.8 x 107		Pure silicon	4.4 x 10-4
Gold	4.1 x 107		Wet soil	~ 10-2
Aluminium	3.5 x 107		Fresh water	~ 10-3
Tungsten	1.8 x 107		Distilled water	~ 10-4
Zink	1.7 x 107		Dry soil	~ 10-4
Brass	1.5 x 107		Glass	10-12
iron	107		Hard rubber	10-15
Bronze	107		Paraffin	10-15
Tin	9 x 106		Mica	10-15
Lead	5 x 106		Fused Quartz	10-15
Mercury	106		Wax	10-17
Carbon	3 x 104		Animal body (avg)	10-17
Seawater	4		Air	0.3 to 0.8 × 10-14