I have been Looking around the guild wars websites trying to find what the rare Materials such as
...Bolt of Damask
Deldrimoor Steel ingot
Ruby
Sapphire
Obsidian Shard
Elonian Leather Square
Spiritwood Plank...

What are these things for? Are they just to sell for cash...or do they add some attribute if you use them in crafting instead of say a regular wood plank?