Rmagick question

Does rmagick handle svg/svgz files? I am getting:

irb(main):018:0> i = Magick::ImageList.new "3dbar.svgz"
Magick::ImageMagickError: no decode delegate for this image format
`C:\DOCUME~1\desmond\LOCALS~1\Tem
p\magick-e2skn171':
        from
c:/ruby/lib/ruby/gems/1.8/gems/RMagick-win32-1.9.0-mswin32/lib/RMagick.rb:1399:in
`read

Are svgz files just gzipped svg files? If so, try unzipping the file
first. ImageMagick can handle a subset of SVG if it has been configured
with the libxml2 and freetype libraries.