Special tradeskill patternsFollow

I was in SoM town earlier, and I see these master crafters. So naturally I go see what theyre selling, and they have some special patterns for tradeskills. for example pig skin patterns or silver fitted patterns. Does anyone know anything about these?
Or what makes these different.

These patterns are for the lvl 30,40, 60 mastersmith armor.

You need a pattern, gem, and ore to make a piece.

It works like regular crafting but instead of costing a ore adn mold each failed attmept it costs only a mold.

Armor and Tailor can craft mc.

There is also rare jewerly gems but I dotn know too much about those.