Here are some black marble fabrics:
check out quiltshops.com for black marble fabric. If you type in black marble, then click on "thumbnails" you can scroll thru different pics to see the different options.
http://search.myquiltshops.com/cgi-s...tion=newsearch
also, Thousands of Bolts
http://www.thousandsofbolts.com/inde...86&ParentCat=3
http://www.thousandsofbolts.com/inde...01&ParentCat=3
There are so many places to look, these are just a few.