Tim,
Actually it is 93% quartz, 7% resin.
First use poly resin to do you r seams. You can color it to match the base color of the stone.
You can find them here:
http://www.defusco.com/Polyester-Resinshttp://www.defusco.com/Coloring-KitsIf you aren't skilled at top polishing don't even attempt this or you will mess up the whole top. Ceasarstone has a textured finish on it and in order to top polish it and leave it looking right you need to :
A) top polish with the skill of a seasoned professional
& B) Use the Klone-it kit to get the texture back so it matches the rest of the top.
If you have questions let me know,
Mark