When you need to use a custom font/Dynamics CRM font which is not available in your Silverlight applications then just “embed” it as shown in this blog.
First of all get the font file (.ttf), if font is already exists at your system then you could find it at “C:\Windows\Font”; otherwise download that font file from the . . . → Read More: Silverlight 4.0 Hosting :: Embedding Custom Font or Dynamics CRM font in Silverlight 4.0