You might be interested in the gorgeous cotton sateen fabric from
http://www.robertkaufman.com/fabrics/ultra_sateen/#tabs
It is 100% cotton, (called Ultra Sateen) but has a nice slight shine, wonderful drape, luscious "hand", and might be just the ticket to back a silk quilt.
Jan in VA
This site has Ivory Ultra sateen for a great price.
http://www.beverlys.com/ultra-sateen...ric-white.html