I have cut cultured marble several times. Used an abrasive blade more than once. Slow and very messy. If you are doing this indoors in an occupied house you almost can't have enough dust collection.
I have one of the little Rockwell Versacut saws that looks like a miniature worm drive saw and it came with a diamond blade and that works well. Messy, but not as bad. You might be able to buy a similar blade for your saw eve if you trash it at the end of the job.