Drazhar,
here's a link to my post and a quote from it as well to help ya.
My post QUESTION: :
Answer Provided by Tycon
How do you get Scorpid, Turtle and Whelp scales?
Dragon scales (very rare), turtle scales, and scorpid scales are all aquired through skinning. Only certain turtles, dragons, and scorpids will produce a scale. See Thottbot for details www.thottbot.com. All scales are rare.
Black Dragonscales Blue Dragonscales Green Dragonscales Red Dragonscales Worn Dragonscales Within each link you'll find the level and drop locations of the specifc dragonscale you're looking for.