Dendritic Agate (quartz)

Appearance:

Translucent white/grey with tree- or fern-like dendrites (patterns of iron or manganese inclusions)

Common variations...

Scenic Agate (dendrites resemble a landscape), Mosquito Agate (also called Midge Stone, fine dendrites resembling a swarm of mosquitoes)

Esoteric beliefs and associations...

White Agate encourages protection, purification and inner peace. With dendrite patterns, it offers natural healing properties.

Other useful information...

This isn't technically an Agate - it's a dendritic chalcedony, similar in nature to Moss Agate.

Physical properties...

Chemistry	Silicon dioxide
System/Structure	Hexagonal (microcrystalline)
Refractive Index	1.540 - 1.559
Specific Gravity	2.58 - 2.62
Mohs' Hardness	6.5 - 7.0