Depends which Ruby you had.
First year of Rubys 2005 all the bikes (comp, elite, pro etc) where all the same.
2008 the top three bikes (S-Works, Pro and Elite) had their frame changed to have bubble zertz in the rear stays and front fork instead of the straight zertz. The lower models had the same frame.
2010 saw the split of the Ruby into the Amira race bike and the Ruby relaxed. The Ruby retained the same shape as 2008.
Dolce changed shape in 2009 to be a bit more like the Ruby. 2011 has had another shape change again. However there are some shapes that cannot be made in aluminimum that can be made in carbon so even thought the Dolce has a very similar shape to the Ruby now, it won't exactly be the same.