Item:White Dragon Scale

White Dragon Scales

 * Gianthold Tor white dragon chest, level 14 quest in Gianthold. 30% drop rate on Normal, Hard and Elite (lower on Casual)
 * Prey on the Hunter optional dragon chest, level 17 quest in Reaver's Refuge. 20% drop rate on Normal, Hard and Elite (again, lower on Casual).

White Dragonscale Armor
By turning in 20 White Dragon Scales to Rukts (Master White Scalesmith of the Runetusk Tribe), he will craft you one of these:

See also: Dragonscale Armor (comparison of all dragonscale options)