Poured Window Sills

Hey Kevin!

A short while back, I saw a clip from the show on Youtube. That particular episode showed you guys pouring a formed limestone window sill cap. I'd be interested in knowing the ingredients in the mix and the ratio's used? I'd considered using quarried stone, but this looks to be a better, less expensive choice. Any details you can supply would be greatly appreciated...

Regards,
Mark aka: Spuds