Essence List

From wow.incgamers.com

Below is a table showing all the Dusts, Essences and Shards that Enchanters can disenchant from magical items.

Disenchanted Reagent	Icon	Enchantments Level used in	Disenchanted Reagent	Icon	Enchantments Level used in
[Unknown Item: Strange Dust]		15 - 140	[Unknown Item: Greater Nether Essence]		230 - 245
[Unknown Item: Soul Dust]		140 - 170	[Unknown Item: Lesser Eternal Essence]		250 - 275
[Unknown Item: Vision Dust]		175 - 225	[Unknown Item: Greater Eternal Essence]		275 - 290
[Unknown Item: Dream Dust]		230 - 270	[Unknown Item: Small Glimmering Shard]		90 - 115
[Unknown Item: Illusion Dust]		275 - 290	[Unknown Item: Large Glimmering Shard]		140 -150
[Unknown Item: Lesser Magic Essence]		10 - 80	[Unknown Item: Small Glowing Shard]		155 - 175
[Unknown Item: Greater Magic Essence]		80 - 100	[Unknown Item: Large Glowing Shard]		195 - 200
[Unknown Item: Lesser Astral Essence]		105 - 145	[Unknown Item: Small Radiant Shard]		225 - 230
[Unknown Item: Greater Astral Essence]		135 -150	[Unknown Item: Large Radiant Shard]		240 - 250
[Unknown Item: Lesser Mystic Essence]		155 - 190	[Unknown Item: Small Brilliant Shard]		265 - 290
[Unknown Item: Greater Mystic Essence]		175 - 200	[Unknown Item: Large Brilliant Shard]		290
[Unknown Item: Lesser Nether Essence]		205 - 230	[Unknown Item: Nexus Crystal]